結果
| 問題 | No.1545 [Cherry 2nd Tune N] Anthem |
| ユーザー |
 torisasami4
|
| 提出日時 | 2021-06-11 22:54:22 |
| 言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
| 結果 |
CE
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 9,969 bytes |
| コンパイル時間 | 1,474 ms |
| コンパイル使用メモリ | 170,020 KB |
| 最終ジャッジ日時 | 2024-11-15 01:27:04 |
| 合計ジャッジ時間 | 4,286 ms |
|
ジャッジサーバーID （参考情報） |
judge2 / judge5 |
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コンパイルエラー時のメッセージ・ソースコードは、提出者また管理者しか表示できないようにしております。（リジャッジ後のコンパイルエラーは公開されます）
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:483:52: error: narrowing conversion of '2.0e+18' from 'double' to 'long long int' [-Wnarrowing]
483 | rep(i, n) rep(j, k) d[i][j] = {2e18, {0, 0}};
| ^
ソースコード
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pb(x) push_back(x)
#define mp(a, b) make_pair(a, b)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define lscan(x) scanf("%I64d", &x)
#define lprint(x) printf("%I64d", x)
#define rep(i, n) for (ll i = 0; i < (n); i++)
#define rep2(i, n) for (ll i = (ll)n - 1; i >= 0; i--)
#define REP(i, l, r) for (ll i = l; i < (r); i++)
#define REP2(i, l, r) for (ll i = (ll)r - 1; i >= (l); i--)
#define siz(x) (ll)x.size()
template <class T>
using rque = priority_queue<T, vector<T>, greater<T>>;
const ll mod = 998244353;
template <class T>
bool chmin(T &a, const T &b) {
if (b < a) {
a = b;
return 1;
}
return 0;
}
template <class T>
bool chmax(T &a, const T &b) {
if (b > a) {
a = b;
return 1;
}
return 0;
}
ll gcd(ll a, ll b)
{
if(a == 0)
return b;
if(b == 0)
return a;
ll c = a % b;
while (c != 0)
{
a = b;
b = c;
c = a % b;
}
return b;
}
long long extGCD(long long a, long long b, long long &x, long long &y)
{
if (b == 0)
{
x = 1;
y = 0;
return a;
}
long long d = extGCD(b, a % b, y, x);
y -= a / b * x;
return d;
}
struct UnionFind
{
vector<ll> data;
int num;
UnionFind(int sz)
{
data.assign(sz, -1);
num = sz;
}
bool unite(int x, int y)
{
x = find(x), y = find(y);
if (x == y)
return (false);
if (data[x] > data[y])
swap(x, y);
data[x] += data[y];
data[y] = x;
num--;
return (true);
}
int find(int k)
{
if (data[k] < 0)
return (k);
return (data[k] = find(data[k]));
}
ll size(int k)
{
return (-data[find(k)]);
}
};
ll M = 1000000007;
template <int mod>
struct ModInt
{
int x;
ModInt() : x(0) {}
ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
ModInt &operator+=(const ModInt &p)
{
if ((x += p.x) >= mod)
x -= mod;
return *this;
}
ModInt &operator-=(const ModInt &p)
{
if ((x += mod - p.x) >= mod)
x -= mod;
return *this;
}
ModInt &operator*=(const ModInt &p)
{
x = (int)(1LL * x * p.x % mod);
return *this;
}
ModInt &operator/=(const ModInt &p)
{
*this *= p.inverse();
return *this;
}
ModInt operator-() const { return ModInt(-x); }
ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }
ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }
ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }
ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }
bool operator==(const ModInt &p) const { return x == p.x; }
bool operator!=(const ModInt &p) const { return x != p.x; }
ModInt inverse() const
{
int a = x, b = mod, u = 1, v = 0, t;
while (b > 0)
{
t = a / b;
swap(a -= t * b, b);
swap(u -= t * v, v);
}
return ModInt(u);
}
ModInt pow(int64_t n) const
{
ModInt ret(1), mul(x);
while (n > 0)
{
if (n & 1)
ret *= mul;
mul *= mul;
n >>= 1;
}
return ret;
}
friend ostream &operator<<(ostream &os, const ModInt &p)
{
return os << p.x;
}
friend istream &operator>>(istream &is, ModInt &a)
{
int64_t t;
is >> t;
a = ModInt<mod>(t);
return (is);
}
static int get_mod() { return mod; }
};
using mint = ModInt<mod>;
mint mpow(mint x, ll n)
{
mint ans = 1;
while (n != 0)
{
if (n & 1)
ans *= x;
x *= x;
n = n >> 1;
}
return ans;
}
ll mpow2(ll x, ll n, ll mod)
{
ll ans = 1;
while (n != 0)
{
if (n & 1)
ans = ans * x % mod;
x = x * x % mod;
n = n >> 1;
}
return ans;
}
vector<mint> fac;
vector<mint> ifac;
void setcomb(int sz = 2000010)
{
fac.assign(sz + 1, 0);
ifac.assign(sz + 1, 0);
fac[0] = 1;
for (ll i = 0; i < sz; i++)
{
fac[i + 1] = fac[i] * (i + 1); // n!(mod M)
}
ifac[sz] = fac[sz].inverse();
for (ll i = sz; i > 0; i--)
{
ifac[i - 1] = ifac[i] * i;
}
}
mint comb(ll a, ll b)
{
if(fac.size() == 0)
setcomb();
if (a == 0 && b == 0)
return 1;
if (a < b || a < 0)
return 0;
return ifac[a - b] * ifac[b] * fac[a];
}
mint perm(ll a, ll b)
{
if(fac.size() == 0)
setcomb();
if (a == 0 && b == 0)
return 1;
if (a < b || a < 0)
return 0;
return fac[a] * ifac[a - b];
}
long long modinv(long long a)
{
long long b = M, u = 1, v = 0;
while (b)
{
long long t = a / b;
a -= t * b;
swap(a, b);
u -= t * v;
swap(u, v);
}
u %= M;
if (u < 0)
u += M;
return u;
}
ll modinv2(ll a, ll mod)
{
ll b = mod, u = 1, v = 0;
while (b)
{
ll t = a / b;
a -= t * b;
swap(a, b);
u -= t * v;
swap(u, v);
}
u %= mod;
if (u < 0)
u += mod;
return u;
}
template <typename Monoid, typename OperatorMonoid = Monoid>
struct LazySegmentTree
{
using F = function<Monoid(Monoid, Monoid)>;
using G = function<Monoid(Monoid, OperatorMonoid)>;
using H = function<OperatorMonoid(OperatorMonoid, OperatorMonoid)>;
int sz, height;
vector<Monoid> data;
vector<OperatorMonoid> lazy;
const F f;
const G g;
const H h;
const Monoid M1;
const OperatorMonoid OM0;
LazySegmentTree(int n, const F f, const G g, const H h,
const Monoid &M1, const OperatorMonoid OM0)
: f(f), g(g), h(h), M1(M1), OM0(OM0)
{
sz = 1;
height = 0;
while (sz < n)
sz <<= 1, height++;
data.assign(2 * sz, M1);
lazy.assign(2 * sz, OM0);
}
void set(int k, const Monoid &x)
{
data[k + sz] = x;
}
void build()
{
for (int k = sz - 1; k > 0; k--)
{
data[k] = f(data[2 * k + 0], data[2 * k + 1]);
}
}
inline void propagate(int k)
{
if (lazy[k] != OM0)
{
lazy[2 * k + 0] = h(lazy[2 * k + 0], lazy[k]);
lazy[2 * k + 1] = h(lazy[2 * k + 1], lazy[k]);
data[k] = reflect(k);
lazy[k] = OM0;
}
}
inline Monoid reflect(int k)
{
return lazy[k] == OM0 ? data[k] : g(data[k], lazy[k]);
}
inline void recalc(int k)
{
while (k >>= 1)
data[k] = f(reflect(2 * k + 0), reflect(2 * k + 1));
}
inline void thrust(int k)
{
for (int i = height; i > 0; i--)
propagate(k >> i);
}
void update(int a, int b, const OperatorMonoid &x)
{
thrust(a += sz);
thrust(b += sz - 1);
for (int l = a, r = b + 1; l < r; l >>= 1, r >>= 1)
{
if (l & 1)
lazy[l] = h(lazy[l], x), ++l;
if (r & 1)
--r, lazy[r] = h(lazy[r], x);
}
recalc(a);
recalc(b);
}
Monoid query(int a, int b)
{
thrust(a += sz);
thrust(b += sz - 1);
Monoid L = M1, R = M1;
for (int l = a, r = b + 1; l < r; l >>= 1, r >>= 1)
{
if (l & 1)
L = f(L, reflect(l++));
if (r & 1)
R = f(reflect(--r), R);
}
return f(L, R);
}
Monoid operator[](const int &k)
{
return query(k, k + 1);
}
template <typename C>
int find_subtree(int a, const C &check, Monoid &M, bool type)
{
while (a < sz)
{
propagate(a);
Monoid nxt = type ? f(reflect(2 * a + type), M) : f(M, reflect(2 * a + type));
if (check(nxt))
a = 2 * a + type;
else
M = nxt, a = 2 * a + 1 - type;
}
return a - sz;
}
template <typename C>
int find_first(int a, const C &check)
{
Monoid L = M1;
if (a <= 0)
{
if (check(f(L, reflect(1))))
return find_subtree(1, check, L, false);
return -1;
}
thrust(a + sz);
int b = sz;
for (a += sz, b += sz; a < b; a >>= 1, b >>= 1)
{
if (a & 1)
{
Monoid nxt = f(L, reflect(a));
if (check(nxt))
return find_subtree(a, check, L, false);
L = nxt;
++a;
}
}
return -1;
}
template <typename C>
int find_last(int b, const C &check)
{
Monoid R = M1;
if (b >= sz)
{
if (check(f(reflect(1), R)))
return find_subtree(1, check, R, true);
return -1;
}
thrust(b + sz - 1);
int a = sz;
for (b += sz; a < b; a >>= 1, b >>= 1)
{
if (b & 1)
{
Monoid nxt = f(reflect(--b), R);
if (check(nxt))
return find_subtree(b, check, R, true);
R = nxt;
}
}
return -1;
}
};
int main(){
ios::sync_with_stdio(false);
std::cin.tie(nullptr);
ll n, s, t, k;
cin >> n >> s >> t >> k;
s--, t--;
ll x[n];
rep(i, n) cin >> x[i];
vector<pair<ll, ll>> li[n];
ll m;
cin >> m;
ll a, b, y;
rep(i, m) cin >> a >> b >> y, li[--a].push_back({--b, y});
pair<ll, pair<ll, ll>> d[n][k];
rep(i, n) rep(j, k) d[i][j] = {2e18, {0, 0}};
rque<pair<ll, pair<pair<ll, ll>, pair<ll, ll>>>> que;
que.push({x[s], {{s, 0}, {-1, -1}}});
while(!que.empty()){
auto q = que.top();
que.pop();
ll nd = q.first, now = q.second.first.first, turn = q.second.first.second;
ll prev = q.second.second.first, pt = q.second.second.second;
if (chmin(d[now][turn], {nd, {prev, pt}})){
for(auto &e: li[now]){
que.push({nd + e.second + x[e.first], {{e.first, min(k - 1, turn + 1)}, {now, turn}}});
}
}
}
if(d[t][k-1].first > 1e18)
cout << "Impossible" << endl;
else{
cout << "Possible" << '\n' << d[t][k - 1].first << endl;
vector<ll> ans;
ans.pb(t + 1);
ll now = t, nt = k - 1;
while(d[now][nt].second.first != -1){
ll prev = d[now][nt].second.first, pt = d[now][nt].second.second;
ans.pb(prev + 1);
now = prev, nt = pt;
}
cout << ans.size() << endl;
rep2(i, ans.size()) cout << ans[i] << (i == 0 ? '\n' : ' ');
}
}