結果

問題 No.1194 Replace
ユーザー ei1333333ei1333333
提出日時 2020-08-22 17:53:18
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 256 ms / 2,000 ms
コード長 4,331 bytes
コンパイル時間 2,265 ms
コンパイル使用メモリ 216,220 KB
実行使用メモリ 23,640 KB
最終ジャッジ日時 2024-10-15 11:44:26
合計ジャッジ時間 7,703 ms
ジャッジサーバーID
(参考情報)
judge4 / judge3
このコードへのチャレンジ
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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 183 ms
17,320 KB
testcase_01 AC 195 ms
18,268 KB
testcase_02 AC 148 ms
15,376 KB
testcase_03 AC 115 ms
13,432 KB
testcase_04 AC 186 ms
18,264 KB
testcase_05 AC 165 ms
17,124 KB
testcase_06 AC 161 ms
16,268 KB
testcase_07 AC 253 ms
23,572 KB
testcase_08 AC 253 ms
23,516 KB
testcase_09 AC 254 ms
23,504 KB
testcase_10 AC 255 ms
23,556 KB
testcase_11 AC 256 ms
23,500 KB
testcase_12 AC 250 ms
23,640 KB
testcase_13 AC 165 ms
14,676 KB
testcase_14 AC 140 ms
13,252 KB
testcase_15 AC 107 ms
11,980 KB
testcase_16 AC 155 ms
14,212 KB
testcase_17 AC 100 ms
11,280 KB
testcase_18 AC 106 ms
11,120 KB
testcase_19 AC 144 ms
14,424 KB
testcase_20 AC 2 ms
5,248 KB
testcase_21 AC 2 ms
5,248 KB
testcase_22 AC 2 ms
5,248 KB
testcase_23 AC 42 ms
7,060 KB
testcase_24 AC 14 ms
5,248 KB
testcase_25 AC 9 ms
5,248 KB
testcase_26 AC 60 ms
7,660 KB
testcase_27 AC 13 ms
5,248 KB
testcase_28 AC 28 ms
5,424 KB
testcase_29 AC 4 ms
5,248 KB
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include<bits/stdc++.h>
using namespace std;
using int64 = long long;
// const int mod = 1e9 + 7;
const int mod = 998244353;
const int64 infll = (1LL << 62) - 1;
const int inf = (1 << 30) - 1;
struct IoSetup {
IoSetup() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << fixed << setprecision(10);
cerr << fixed << setprecision(10);
}
} iosetup;
template< typename T1, typename T2 >
ostream &operator<<(ostream &os, const pair< T1, T2 > &p) {
os << p.first << " " << p.second;
return os;
}
template< typename T1, typename T2 >
istream &operator>>(istream &is, pair< T1, T2 > &p) {
is >> p.first >> p.second;
return is;
}
template< typename T >
ostream &operator<<(ostream &os, const vector< T > &v) {
for(int i = 0; i < (int) v.size(); i++) {
os << v[i] << (i + 1 != v.size() ? " " : "");
}
return os;
}
template< typename T >
istream &operator>>(istream &is, vector< T > &v) {
for(T &in : v) is >> in;
return is;
}
template< typename T1, typename T2 >
inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }
template< typename T1, typename T2 >
inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }
template< typename T = int64 >
vector< T > make_v(size_t a) {
return vector< T >(a);
}
template< typename T, typename... Ts >
auto make_v(size_t a, Ts... ts) {
return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...));
}
template< typename T, typename V >
typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) {
t = v;
}
template< typename T, typename V >
typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) {
for(auto &e : t) fill_v(e, v);
}
template< typename F >
struct FixPoint : F {
FixPoint(F &&f) : F(forward< F >(f)) {}
template< typename... Args >
decltype(auto) operator()(Args &&... args) const {
return F::operator()(*this, forward< Args >(args)...);
}
};
template< typename F >
inline decltype(auto) MFP(F &&f) {
return FixPoint< F >{forward< F >(f)};
}
template< typename T = int >
struct Edge {
int from, to;
T cost;
int idx;
Edge() = default;
Edge(int from, int to, T cost = 1, int idx = -1) : from(from), to(to), cost(cost), idx(idx) {}
operator int() const { return to; }
};
template< typename T = int >
struct Graph {
vector< vector< Edge< T > > > g;
int es;
Graph() = default;
explicit Graph(int n) : g(n), es(0) {}
size_t size() const {
return g.size();
}
void add_directed_edge(int from, int to, T cost = 1) {
g[from].emplace_back(from, to, cost, es++);
}
void add_edge(int from, int to, T cost = 1) {
g[from].emplace_back(from, to, cost, es);
g[to].emplace_back(to, from, cost, es++);
}
void read(int M, int padding = -1, bool weighted = false, bool directed = false) {
for(int i = 0; i < M; i++) {
int a, b;
cin >> a >> b;
a += padding;
b += padding;
T c = T(1);
if(weighted) cin >> c;
if(directed) add_directed_edge(a, b, c);
else add_edge(a, b, c);
}
}
};
template< typename T = int >
using Edges = vector< Edge< T > >;
int main() {
int N, M;
cin >> N >> M;
vector< int > B(M), C(M);
vector< int > xs;
xs.emplace_back(1);
xs.emplace_back(N);
for(int i = 0; i < M; i++) {
cin >> B[i] >> C[i];
xs.emplace_back(B[i]);
xs.emplace_back(C[i]);
}
sort(begin(xs), end(xs));
xs.erase(unique(begin(xs), end(xs)), end(xs));
Graph<> g(xs.size());
for(int i = 0; i < M; i++) {
B[i] = lower_bound(begin(xs), end(xs), B[i]) - begin(xs);
C[i] = lower_bound(begin(xs), end(xs), C[i]) - begin(xs);
g.add_directed_edge(C[i], B[i]);
}
vector< int > used(xs.size());
int64 score = 0;
for(int i = (int) xs.size() - 1; i >= 0; i--) {
if(used[i]) continue;
used[i] = true;
queue< int > que;
que.emplace(i);
score += xs[i];
while(!que.empty()) {
int idx = que.front();
que.pop();
for(auto &to : g.g[idx]) {
if(used[to]) continue;
que.emplace(to);
score += xs[i];
used[to] = true;
}
}
}
for(int i = 1; i < xs.size(); i++) {
int64 ue = 1LL * xs[i] * (xs[i] - 1) / 2;
int64 sita = 1LL * xs[i - 1] * (xs[i - 1] + 1) / 2;
score += ue;
score -= sita;
}
cout << score << "\n";
}
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