結果
問題 | No.2712 Play more! |
ユーザー |
|
提出日時 | 2024-03-31 14:21:44 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,022 bytes |
コンパイル時間 | 4,695 ms |
コンパイル使用メモリ | 313,564 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-09-30 19:25:27 |
合計ジャッジ時間 | 7,207 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 31 WA * 2 |
ソースコード
#include <bits/stdc++.h>#include <atcoder/all>using namespace std;using namespace atcoder;istream &operator>>(istream &is, modint &a) { long long v; is >> v; a = v; return is; }ostream &operator<<(ostream &os, const modint &a) { return os << a.val(); }istream &operator>>(istream &is, modint998244353 &a) { long long v; is >> v; a = v; return is; }ostream &operator<<(ostream &os, const modint998244353 &a) { return os << a.val(); }istream &operator>>(istream &is, modint1000000007 &a) { long long v; is >> v; a = v; return is; }ostream &operator<<(ostream &os, const modint1000000007 &a) { return os << a.val(); }typedef long long ll;typedef vector<vector<int>> Graph;typedef pair<int, int> pii;typedef pair<ll, ll> pll;#define FOR(i,l,r) for (int i = l;i < (int)(r); i++)#define rep(i,n) for (int i = 0;i < (int)(n); i++)#define all(x) x.begin(), x.end()#define rall(x) x.rbegin(), x.rend()#define my_sort(x) sort(x.begin(), x.end())#define my_max(x) *max_element(all(x))#define my_min(x) *min_element(all(x))template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }const int INF = (1<<30) - 1;const ll LINF = (1LL<<62) - 1;const int MOD = 998244353;const int MOD2 = 1e9+7;const double PI = acos(-1);vector<int> di = {1,0,-1,0};vector<int> dj = {0,1,0,-1};#ifdef LOCAL# include <debug_print.hpp># define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)#else# define debug(...) (static_cast<void>(0))#endifstruct Edge{int from, to;ll cost;};bool bellman_ford(int st, vector<ll> &dist, vector<Edge> & edges){int N = dist.size();int E = edges.size();for(int i=0;i<N;i++) dist[i] = LINF;dist[st] = 0ll;rep(i,N){bool update = false;for(auto e: edges){if (dist[e.from] != LINF && dist[e.to] > dist[e.from] + e.cost){dist[e.to] = dist[e.from] + e.cost;update = true;}}if (!update) return true;}// 負閉路上の頂点の距離を-LINFにするfor(int i=0;i<N;i++){for(auto e:edges){if (dist[e.from] == LINF)continue;if (dist[e.from] + e.cost < dist[e.to]){dist[e.to] = -LINF;}}}return false;}// 経路復元...https://algo-method.com/tasks/992/editorialint main(){cin.tie(0);ios_base::sync_with_stdio(false);int N, M; cin >> N >> M;vector<ll> A(N);rep(i,N) cin >> A[i];vector<Edge> edges;rep(i,M){int a, b; cin >> a >> b;a--;b--;ll c; cin >> c;edges.push_back(Edge{a + N, b, c});}rep(i,N) edges.push_back(Edge{i, i + N, -A[i]});vector<ll> dist(2 * N, LINF);bool f = bellman_ford(0, dist, edges);if(f){cout << -dist[2 * N - 1] << endl;}else{cout << "inf" << endl;}}