結果
問題 | No.2712 Play more! |
ユーザー | pitP |
提出日時 | 2024-04-03 21:47:11 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 321 ms / 2,000 ms |
コード長 | 3,201 bytes |
コンパイル時間 | 4,479 ms |
コンパイル使用メモリ | 271,604 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-01 00:06:47 |
合計ジャッジ時間 | 7,088 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 1 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 112 ms
5,248 KB |
testcase_08 | AC | 111 ms
5,248 KB |
testcase_09 | AC | 111 ms
5,248 KB |
testcase_10 | AC | 1 ms
5,248 KB |
testcase_11 | AC | 56 ms
5,248 KB |
testcase_12 | AC | 315 ms
5,248 KB |
testcase_13 | AC | 22 ms
5,248 KB |
testcase_14 | AC | 182 ms
5,248 KB |
testcase_15 | AC | 321 ms
5,248 KB |
testcase_16 | AC | 16 ms
5,248 KB |
testcase_17 | AC | 5 ms
5,248 KB |
testcase_18 | AC | 37 ms
5,248 KB |
testcase_19 | AC | 7 ms
5,248 KB |
testcase_20 | AC | 57 ms
5,248 KB |
testcase_21 | AC | 23 ms
5,248 KB |
testcase_22 | AC | 278 ms
5,248 KB |
testcase_23 | AC | 7 ms
5,248 KB |
testcase_24 | AC | 26 ms
5,248 KB |
testcase_25 | AC | 5 ms
5,248 KB |
testcase_26 | AC | 40 ms
5,248 KB |
testcase_27 | AC | 59 ms
5,248 KB |
testcase_28 | AC | 8 ms
5,248 KB |
testcase_29 | AC | 32 ms
5,248 KB |
testcase_30 | AC | 310 ms
5,248 KB |
testcase_31 | AC | 3 ms
5,248 KB |
testcase_32 | AC | 4 ms
5,248 KB |
testcase_33 | AC | 1 ms
5,248 KB |
testcase_34 | AC | 1 ms
5,248 KB |
testcase_35 | AC | 1 ms
5,248 KB |
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)) #endif using Edge = tuple<ll, int, int>; pair<vector<ll>, vector<ll>> bellman_ford(int V, int st, vector<Edge> &edges){ vector<ll> dist(V, LINF), negative(V, false); dist[st] = 0; for(int i = 0; i < V - 1; i++){ bool update = false; for(auto &e : edges){ ll weight; int now, nxt; tie(weight, now, nxt) = e; if(dist[now] != LINF && dist[nxt] > dist[now] + weight){ dist[nxt] = dist[now] + weight; update = true; } } if(!update)return make_pair(dist, negative); } for(int i = 0; i < V; i++){ for(auto &e : edges){ ll weight; int now, nxt; tie(weight, now, nxt) = e; if(dist[now] != LINF && dist[nxt] > dist[now] + weight){ dist[nxt] = dist[now] + weight; negative[nxt] = true; } if(negative[now]) negative[nxt] = true; } } return make_pair(dist, negative); } int 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,N) { edges.push_back(Edge{-A[i], i, i + N}); } rep(i,M){ int a, b, c; cin >> a >> b >> c; a--, b--; edges.push_back(Edge{c, a + N, b}); } auto ret = bellman_ford(2 * N, 0, edges); debug(ret.first); debug(ret.second); if(!ret.second[2 * N - 1]){ cout << -ret.first[2 * N - 1] << endl; } else{ cout << "inf" << endl; } }