結果
| 問題 | No.34 砂漠の行商人 |
| ユーザー |
 Konton7
|
| 提出日時 | 2021-04-29 11:03:24 |
| 言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
| 結果 |
AC
|
| 実行時間 | 317 ms / 5,000 ms |
| コード長 | 19,946 bytes |
| コンパイル時間 | 3,216 ms |
| コンパイル使用メモリ | 241,428 KB |
| 実行使用メモリ | 395,136 KB |
| 最終ジャッジ日時 | 2024-07-08 10:06:04 |
| 合計ジャッジ時間 | 5,102 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge5 |
（要ログイン）
テストケース
テストケース表示| 入力 | 結果 | 実行時間 実行使用メモリ |
|---|---|---|
| testcase_00 | AC | 2 ms
5,248 KB |
| testcase_01 | AC | 2 ms
5,376 KB |
| testcase_02 | AC | 2 ms
5,376 KB |
| testcase_03 | AC | 2 ms
5,376 KB |
| testcase_04 | AC | 5 ms
5,376 KB |
| testcase_05 | AC | 6 ms
5,504 KB |
| testcase_06 | AC | 3 ms
5,376 KB |
| testcase_07 | AC | 9 ms
6,656 KB |
| testcase_08 | AC | 12 ms
8,472 KB |
| testcase_09 | AC | 167 ms
229,596 KB |
| testcase_10 | AC | 317 ms
395,008 KB |
| testcase_11 | AC | 286 ms
395,136 KB |
| testcase_12 | AC | 4 ms
5,376 KB |
| testcase_13 | AC | 93 ms
101,760 KB |
| testcase_14 | AC | 84 ms
98,048 KB |
| testcase_15 | AC | 32 ms
43,264 KB |
| testcase_16 | AC | 59 ms
81,536 KB |
| testcase_17 | AC | 27 ms
30,936 KB |
| testcase_18 | AC | 7 ms
9,344 KB |
| testcase_19 | AC | 27 ms
23,680 KB |
| testcase_20 | AC | 41 ms
38,656 KB |
| testcase_21 | AC | 7 ms
6,144 KB |
| testcase_22 | AC | 37 ms
39,168 KB |
| testcase_23 | AC | 82 ms
115,840 KB |
| testcase_24 | AC | 159 ms
206,464 KB |
| testcase_25 | AC | 12 ms
9,856 KB |
ソースコード
#include <bits/stdc++.h>
// #include <set>
// #include <map>
// #include <cmath>
// #include <deque>
// #include <vector>
// #include <iostream>
// #include <algorithm>
using namespace std;
using ll = long long;
using VI = vector<int>;
using VL = vector<ll>;
using VD = vector<double>;
using VS = vector<string>;
using VB = vector<bool>;
using VVB = vector<vector<bool>>;
using VVI = vector<VI>;
using VVL = vector<VL>;
using VVD = vector<VD>;
using VVVI = vector<VVI>;
using VVVL = vector<VVL>;
using VVVD = vector<VVD>;
using PII = std::pair<int, int>;
using VPII = std::vector<std::pair<int, int>>;
using PLL = std::pair<ll, ll>;
using VPLL = std::vector<std::pair<ll, ll>>;
using TI3 = std::tuple<int, int, int>;
using TI4 = std::tuple<int, int, int, int>;
using TL3 = std::tuple<ll, ll, ll>;
using TL4 = std::tuple<ll, ll, ll, ll>;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
#define repr2(i, g, n) for (int i = (int)(n)-1; i >= (g); i--)
#define rep3(i, s, n, d) for (int i = (s); i < (int)(n); i += (d))
#define repr3(i, g, n, d) for (int i = (int)(n)-1; i >= (g); i -= (d))
#define allpt(v) (v).begin(), (v).end()
#define allpt_c(v) (v).cbegin(), (v).cend()
#define allpt_r(v) (v).rbegin(), (v).rend()
#define allpt_cr(v) (v).crbegin(), (v).crend()
const int mod1 = 1e9 + 7, mod2 = 998244353, mod3 = 1e9 + 9;
const int mod = mod1;
const ll inf = 1e18;
const int infint = 1e9;
const string wsp = " ";
const string tb = "\t";
const string rt = "\n";
const string alphabets = "abcdefghijklmnopqrstuvwxyz";
template <typename T>
void show1dvec(const vector<T> &v) {
if (v.size() == 0) return;
int n = v.size() - 1;
rep(i, n) cout << v[i] << wsp;
cout << v[n] << rt;
return;
}
int get1dcoodinate(int w, int i, int j) { return i * w + j; }
template <typename T>
ostream &operator<<(ostream &os, const vector<T> &v) {
if (v.size() == 0) return os;
int n = v.size() - 1;
rep(i, n) os << v[i] << wsp;
os << v[n] << rt;
return os;
}
template <typename T>
istream &operator>>(istream &is, vector<T> &v) {
if (v.size() == 0) return is;
int n = v.size();
rep(i, n) is >> v[i];
return is;
}
template <typename T>
ostream &operator<<(ostream &os, const vector<vector<T>> &v) {
if (v.size() == 0) return os;
int n = v.size();
rep(i, n) os << v[i];
return os;
}
template <typename T>
istream &operator>>(istream &is, vector<vector<T>> &v) {
if (v.size() == 0) return is;
int n = v.size();
rep(i, n) is >> v[i];
return is;
}
template <typename T, typename S>
istream &operator>>(istream &is, vector<pair<T, S>> &v) {
if (v.size() == 0) return is;
int n = v.size();
rep(i, n) is >> v[i].first >> v[i].second;
return is;
}
template <typename T, typename S>
ostream &operator<<(ostream &os, const vector<pair<T, S>> &v) {
if (v.size() == 0) return os;
int n = v.size();
rep(i, n) os << v[i].first << wsp << v[i].second << rt;
return os;
}
void show2dvec(const vector<string> &v) {
int n = v.size();
rep(i, n) cout << v[i] << rt;
}
template <typename T>
void show2dvec(const vector<vector<T>> &v) {
int n = v.size();
rep(i, n) show1dvec(v[i]);
}
template <typename T>
void range_sort(vector<T> &arr, int l, int r) {
sort(arr.begin() + l, arr.begin() + r);
}
template <typename T, typename S>
void show1dpair(const vector<pair<T, S>> &v) {
int n = v.size();
rep(i, n) cout << v[i].first << v[i].second << rt;
return;
}
template <typename T, typename S>
void pairzip(const vector<pair<T, S>> &v, vector<T> &t, vector<T> &s) {
int n = v.size();
rep(i, n) {
t.push_back(v[i].first);
s.push_back(v[i].second);
}
return;
}
template <typename T>
void maxvec(vector<T> &v) {
T s = v[0];
int n = v.size();
rep(i, n - 1) {
if (s > v[i + 1]) {
v[i + 1] = s;
}
s = v[i + 1];
}
}
template <typename T, typename S>
bool myfind(T t, S s) {
return find(t.cbegin(), t.cend(), s) != t.cend();
}
bool check(int y, int x, int h, int w) {
return 0 <= y && y < h && 0 <= x && x < w;
}
bool check(int y, int x, int h1, int h2, int w1, int w2) {
return h1 <= y && y < h2 && w1 <= x && x < w2;
}
bool iskadomatsu(int a, int b, int c) {
return (a != b && b != c && c != a) &&
((a > b && b < c) || (a < b && b > c));
}
template <typename T>
bool iskadomatsu(vector<T> v) {
T a = v[0], b = v[1], c = v[2];
return (a != b && b != c && c != a) &&
((a > b && b < c) || (a < b && b > c));
}
double euc_dist(PII a, PII b) {
return sqrt(pow(a.first - b.first, 2) + pow(a.second - b.second, 2));
}
// VS split(string s, char c) {
// VS ret;
// string part;
// s += c;
// rep(i, s.length()) {
// if (s[i] == c) {
// if (part != "") ret.emplace_back(part);
// part = "";
// } else if (s[i] != c) {
// part += s[i];
// }
// }
// return ret;
// }
VS split(string s, char c, char d = ' ') {
VS ret;
// reverse(allpt(s));
string part;
s += c;
rep(i, s.length()) {
if (s[i] == c) {
if (part != "") {
// string t;
// t += c;
// ret.emplace_back(t);
ret.emplace_back(part);
}
part = "";
} else {
part += s[i];
}
}
return ret;
}
template <typename T, typename S, typename R>
ll pow_mod(T p, S q, R mod = 1ll) {
ll ret = 1, r = p;
while (q) {
if (q % 2) ret *= r, ret %= mod;
r = (r * r) % mod, q /= 2;
}
return ret % mod;
}
template <typename T, typename S>
ll pow_no_mod(T p, S q) {
ll ret = 1, r = p;
while (q) {
if (q % 2) ret *= r;
r = (r * r), q /= 2;
}
return ret;
}
void make_frac_tables(VL &frac_list, VL &frac_inv_list) {
rep(i, frac_list.size() - 1) {
frac_list[i + 1] *= frac_list[i] * (i + 1);
frac_list[i + 1] %= mod;
frac_inv_list[i + 1] *= frac_inv_list[i] * pow_mod(i + 1, mod - 2, mod);
frac_inv_list[i + 1] %= mod;
}
}
pair<VL, VL> make_frac_tables(int n) {
VL frac_list(n + 1, 1), frac_inv_list(n + 1, 1);
rep(i, n) {
frac_list[i + 1] *= frac_list[i] * (i + 1);
frac_list[i + 1] %= mod;
frac_inv_list[i + 1] *= frac_inv_list[i] * pow_mod(i + 1, mod - 2, mod);
frac_inv_list[i + 1] %= mod;
}
return make_pair(frac_list, frac_inv_list);
}
ll comb(int a, int b, const VL &frac_list, const VL &frac_inv_list) {
if (a < b) return 0;
if (b < 0) return 0;
ll ret = frac_list[a];
ret *= frac_inv_list[b];
ret %= mod;
ret *= frac_inv_list[a - b];
ret %= mod;
return ret;
}
struct vec2d {
ll x;
ll y;
vec2d(ll _x, ll _y) {
x = _x;
y = _y;
}
ll dot(vec2d p) { return x * p.x + y * p.y; }
vec2d diff(vec2d p) { return vec2d(x - p.x, y - p.y); }
};
struct node {
int parent = -1;
ll weight = 0;
int depth = 0;
int degree = -1;
int subtree = 1;
int check = 0;
int scc = -1;
int leglen_up = 1;
int leglen_down = 1;
VPII children;
VI parent_list;
VPII connect;
node() {
parent = -1;
weight = 0;
depth = 0;
degree = -1;
subtree = 1;
check = 0;
children;
parent_list;
connect;
}
};
struct graph {
int _n;
int root = 0;
vector<node> nodes;
graph(int n) {
_n = n;
rep(i, _n) nodes.emplace_back(node());
}
void getconnect0_1() {
int a, b;
cin >> a >> b;
nodes[a].connect.emplace_back(b, 1);
nodes[b].connect.emplace_back(a, 1);
}
void getconnect0_2() {
int a, b, c;
cin >> a >> b >> c;
nodes[a].connect.emplace_back(b, c);
nodes[b].connect.emplace_back(a, c);
}
void getconnect1_1() {
int a, b;
cin >> a >> b;
a--, b--;
nodes[a].connect.emplace_back(b, 1);
nodes[b].connect.emplace_back(a, 1);
}
void getconnect1_2() {
int a, b, c;
cin >> a >> b >> c;
a--, b--;
nodes[a].connect.emplace_back(b, c);
nodes[b].connect.emplace_back(a, c);
}
void showparent() {
rep(i, _n - 1) cout << nodes[i].parent << wsp;
cout << nodes[_n - 1].parent << rt;
}
void showweight() {
rep(i, _n - 1) cout << nodes[i].weight << wsp;
cout << nodes[_n - 1].weight << rt;
}
void showsubtree() {
rep(i, _n - 1) cout << nodes[i].subtree << wsp;
cout << nodes[_n - 1].subtree << rt;
}
void showdepth() {
rep(i, _n - 1) cout << nodes[i].depth << wsp;
cout << nodes[_n - 1].depth << rt;
}
};
struct point {
int x;
int y;
point() {
x = 0;
y = 0;
}
point(int _x, int _y) {
x = _x;
y = _y;
}
void pointinput() {
int _x, _y;
cin >> _x >> _y;
x = _x;
y = _y;
}
void pointinv() { swap(x, y); }
};
istream &operator>>(istream &is, point &p) {
is >> p.x >> p.y;
return is;
}
ostream &operator<<(ostream &os, point &p) {
os << p.x << wsp << p.y << rt;
return os;
}
double pointseuc(point a, point b) {
ll ax = a.x, bx = b.x, ay = a.y, by = b.y;
return sqrt(pow(ax - bx, 2) + pow(ay - by, 2));
}
ll pointseucsquare(point a, point b) {
ll ax = a.x, bx = b.x, ay = a.y, by = b.y;
return (ax - bx) * (ax - bx) + (ay - by) * (ay - by);
}
int pointsmanhattan(point a, point b) {
return abs(a.x - b.x) + abs(a.y - b.y);
}
double dist_segment_point(TL3 segment, point p) {
double a = get<0>(segment);
double b = get<1>(segment);
double c = get<2>(segment);
return abs(a * p.x + b * p.y - c) / (a * a + b * b + c * c);
}
TL3 segment_parameter(point p, point q) {
ll a, b, c;
a = q.y - p.y;
b = p.x - q.x;
c = a * p.x + b * p.y;
TL3 ret = (TL3){a, b, c};
// cout << a << b << c << rt;
return ret;
}
int cross_check(TL3 segment, point p) {
ll a = get<0>(segment);
ll b = get<1>(segment);
ll c = get<2>(segment);
auto f = a * p.x + b * p.y - c;
int ret;
if (f > 0) ret = 1;
if (f == 0) ret = 0;
if (f < 0) ret = -1;
return ret;
}
VI shave(int n) {
VI v;
if (n <= 1) return v;
vector<bool> w(n + 1, true);
int x;
w[0] = w[1] = false;
rep2(i, 2, n + 1) {
if (w[i]) {
x = i * 2;
while (x <= n) {
w[x] = false;
x += i;
}
}
}
rep(i, n + 1) if (w[i]) v.emplace_back(i);
return v;
}
void shave(vector<int> &v, int n) {
if (n <= 1) return;
vector<bool> w(n + 1, true);
int x;
w[0] = w[1] = false;
rep2(i, 2, n + 1) {
if (w[i]) {
x = i * 2;
while (x <= n) {
w[x] = false;
x += i;
}
}
}
rep(i, n + 1) if (w[i]) v.emplace_back(i);
}
template <typename T>
void coordinate_compress(vector<T> &x, map<T, int> &zip, int &xs) {
sort(x.begin(), x.end());
x.erase(unique(x.begin(), x.end()), x.end());
xs = x.size();
for (int i = 0; i < xs; i++) {
zip[x[i]] = i;
}
}
// ll getpalindrome(int l, int r, const string &s, VL &memo) {
// if (r - l <= 1) return 1;
// if (memo[l] != -1) return memo[l];
// ll ret{1};
// int n = (r - l) / 2;
// string sl, sr;
// rep(i, n) {
// sl += s[l + i];
// sr += s[r - 1 - i];
// string rsr(i + 1, '0');
// reverse_copy(allpt_c(sr), rsr.begin());
// // cout << sl << wsp << sr << wsp << rsr << rt;
// if (sl == rsr) {
// ret += getpalindrome(l + i + 1, r - i - 1, s, memo);
// ret %= mod;
// }
// }
// memo[l] = ret;
// return ret;
// }
void getpalindrome(int l, int r, int n, const string &s, VVB &memo) {
if (r - l <= 1 || s[l] == s[r - 1]) {
memo[l][r] = true;
if (l > 0 && r < n) {
getpalindrome(l - 1, r + 1, n, s, memo);
}
}
return;
}
// void djcstra(graph graphs, int s, int t) {
// const int n = graphs._n;
// VL shortest(n, inf);
// shortest[s] = 0;
// priority_queue<pair<ll, int>> pq;
// pq.push(make_pair(0, s));
// while (!pq.empty()) {
// auto [t, v] = pq.top();
// pq.pop();
// t = -t;
// if (shortest[v] != t) continue;
// for (auto [u, c] : graphs.nodes[v].connect) {
// if (t + c < shortest[u]) {
// shortest[u] = t + c;
// pq.push(make_pair(-(t + c), u));
// }
// }
// }
// }
VL djcstra(graph graphs, int s) {
const int n = graphs._n;
VL shortest(n, inf);
shortest[s] = 0;
priority_queue<pair<ll, int>> pq;
pq.push(make_pair(0, s));
while (!pq.empty()) {
auto [t, v] = pq.top();
pq.pop();
t = -t;
if (shortest[v] != t) continue;
for (auto [u, c] : graphs.nodes[v].connect) {
if (t + c < shortest[u]) {
shortest[u] = t + c;
pq.push(make_pair(-(t + c), u));
}
}
}
// cout << shortest;
return shortest;
}
class Unionfind {
vector<int> p;
public:
Unionfind(int n) {
for (int i = 0; i < n; i++) {
p.push_back(i);
}
}
int find(int x) {
while (p[x] != x) {
p[x] = p[p[x]];
x = p[x];
}
return x;
}
int getval(int x) { return p[x]; }
void unite(int x, int y) {
x = find(x);
y = find(y);
if (x != y) {
p[x] = y;
}
}
bool isunion(int x, int y) { return find(x) == find(y); }
void showtree() { cout << p; }
};
template <typename T>
class RangeMinorMaxorSumQuery // 0-index
{
int const intmax = 2147483647;
int const intmin = 0;
vector<T> sgt;
int n;
int k;
public:
RangeMinorMaxorSumQuery(int n1, T f = -1) {
if (f == -1)
f = intmax;
else if (f == 0)
f = intmin;
int na = 1;
int ka = 0;
while (na < n1) {
na *= 2;
ka++;
}
for (int i = 0; i < 2 * na; i++) sgt.push_back(f);
n = na;
k = ka;
}
void update_min(int i, int x) {
i += n;
sgt[i] = x;
while (i > 1) {
i /= 2;
sgt[i] = min(sgt[2 * i], sgt[2 * i + 1]);
}
}
void update_max(int i, T x) {
i += n;
sgt[i] = x;
while (i > 1) {
i /= 2;
sgt[i] = max(sgt[2 * i], sgt[2 * i + 1]);
}
}
void update_sum(int i, T x) {
i += n;
sgt[i] = x;
while (i > 1) {
i /= 2;
sgt[i] = sgt[2 * i] + sgt[2 * i + 1];
}
}
void add_sum(int i, T x) {
i += n;
sgt[i] += x;
while (i > 1) {
i /= 2;
sgt[i] = sgt[2 * i] + sgt[2 * i + 1];
}
}
void add_min(int i, T x) {
i += n;
sgt[i] += x;
while (i > 1) {
i /= 2;
sgt[i] = min(sgt[2 * i], sgt[2 * i + 1]);
}
}
void add_max(int i, T x) {
i += n;
sgt[i] += x;
while (i > 1) {
i /= 2;
sgt[i] = max(sgt[2 * i], sgt[2 * i + 1]);
}
}
T get_min(int a, int b, int k = 1, int l = 0,
int r = -1) //閉区間 l <= x < r とする
{
if (r == -1) r = n;
if (r <= a || b <= l) return intmax;
if (a == l && b == r)
return sgt[k];
else
return min(
get_min(a, min(b, (l + r) / 2), 2 * k, l, (l + r) / 2),
get_min(max(a, (l + r) / 2), b, 2 * k + 1, (l + r) / 2, r));
}
T get_max(int a, int b, int k = 1, int l = 0,
int r = -1) //閉区間 l <= x < r とする
{
if (r == -1) r = n;
if (r <= a || b <= l) return intmin;
if (a == l && b == r)
return sgt[k];
else
return max(
get_max(a, min(b, (l + r) / 2), 2 * k, l, (l + r) / 2),
get_max(max(a, (l + r) / 2), b, 2 * k + 1, (l + r) / 2, r));
}
T get_sum(int a, int b, int k = 1, int l = 0,
int r = -1) //閉区間 l <= x < r とする
{
if (r == -1) r = n;
if (r <= a || b <= l) return intmin;
if (a == l && b == r)
return sgt[k];
else
return get_sum(a, min(b, (l + r) / 2), 2 * k, l, (l + r) / 2) +
get_sum(max(a, (l + r) / 2), b, 2 * k + 1, (l + r) / 2, r);
}
T operator[](int i) { return sgt[i + n]; }
void printsegtree() {
for (int i = 0; i < 2 * n; i++) {
cout << sgt[i] << " ";
}
cout << endl;
}
};
template <typename T>
class Bit_Index_Tree // 1-index
{
int n = 0;
vector<T> v;
public:
Bit_Index_Tree(int _n, T x = 0) {
n = _n;
v.resize(n + 1);
fill(allpt(v), x);
}
Bit_Index_Tree(vector<T> _v) {
n = _v.size();
v = _v;
}
void add(int i, T x) {
while (i <= n) {
v[i] += x;
i += i & -i;
}
}
T get_sum(int i) {
T ret = 0;
while (i > 0) {
ret += v[i];
i -= i & -i;
}
return ret;
}
T get_range_sum(int l, int r) { // 半開区間 l <= x < r
return get_sum(r) - get_sum(l);
}
};
// #define DEBUG
int main() {
// cin.tie(0);
// ios::sync_with_stdio(false);
// リアクティブ問題のときはコメントアウト
#ifdef DEBUG
cout << "DEBUG MODE" << endl;
// ifstream in("input.txt"); // for debug
// cin.rdbuf(in.rdbuf()); // for debug
chrono::system_clock::time_point timestart, timeend; // for debug
timestart = std::chrono::system_clock::now(); // for debug
#endif
int n, m{100000}, ans, v, sy, sx, s, gy, gx, g, p, q;
cin >> n >> v >> sx >> sy >> gx >> gy;
s = get1dcoodinate(n, sy - 1, sx - 1);
g = get1dcoodinate(n, gy - 1, gx - 1);
VVI shortest(n * n, VI(v, m)), field(n, VI(n));
VI min_health(n * n, -1);
deque<PII> que;
que.emplace_back(make_pair(s, v - 1));
vector<VPII> connect(n * n);
cin >> field;
const VPII adjust = {{1, 0}, {-1, 0}, {0, 1}, {0, -1}};
shortest[s][v - 1] = 0;
min_health[s] = v - 1;
rep(i, n) rep(j, n) {
p = get1dcoodinate(n, i, j);
for (auto [di, dj] : adjust) {
if (check(i + di, j + dj, n, n)) {
q = get1dcoodinate(n, i + di, j + dj);
connect[p].emplace_back(make_pair(field[i + di][j + dj], q));
}
}
}
rep(i, n * n) sort(allpt(connect[i]));
while (!que.empty()) {
auto [p, v] = que.front();
que.pop_front();
for (auto [c, q] : connect[p]) {
if (v >= c && v - c > min_health[q] && shortest[q][v - c] == m) {
shortest[q][v - c] = shortest[p][v] + 1;
min_health[q] = v - c;
que.emplace_back(make_pair(q, v - c));
}
}
}
ans = *min_element(allpt_c(shortest[g]));
cout << (ans == m ? -1 : ans) << rt;
#ifdef DEBUG
timeend = chrono::system_clock::now();
auto elapsed =
chrono::duration_cast<chrono::milliseconds>(timeend - timestart)
.count();
cout << "Time is " << elapsed << "ms" << std::endl;
#endif
return 0;
}