Submission #1609040
Source Code Expand
# include <iostream> # include <algorithm> # include <vector> # include <string> # include <set> # include <map> # include <cmath> # include <iomanip> # include <functional> # include <utility> # include <stack> # include <queue> # include <list> using namespace std; using LL = long long; constexpr long long MOD = 1000000000 + 7; constexpr long long INF = 100000000000; const double PI = acos(-1); struct edge { LL from, to, cost; }; edge es[2010]; LL d[2010]; bool negative[2010]; int v, e; LL shortest_path(int s) { for (int i = 0; i < v; i++)d[i] = INF; d[s] = 0; for (int loop = 0; loop < v; loop++) { for (int i = 0; i < e; i++) { edge e = es[i]; if (d[e.from] != INF&&d[e.to] > d[e.from] + e.cost) { d[e.to] = d[e.from] + e.cost; } } } return d[v]; } int main() { cin >> v >> e; LL a[2010], b[2010], c[2010]; for (int i = 0; i < e; i++) { cin >> a[i] >> b[i] >> c[i]; c[i] = -c[i]; es[i] = { a[i],b[i],c[i] }; } LL ans = shortest_path(1); for (int loop = 0; loop < v; loop++) { for (int i = 0; i < e; i++) { if (d[a[i]] == INF) continue; if (d[b[i]] > d[a[i]] + c[i]) { d[b[i]] = d[a[i]] + c[i]; negative[b[i]] = true; } if (negative[a[i]] == true) { negative[b[i]] = true; } } } if (negative[v]) { cout << "inf" << endl; } else { cout << -ans << endl; } }
Submission Info
Submission Time | |
---|---|
Task | A - Between Two Integers |
User | M3_cp |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 1428 Byte |
Status | WA |
Exec Time | 1 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 100 | ||||
Status |
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Set Name | Test Cases |
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Sample | sample_01.txt, sample_02.txt, sample_03.txt |
All | sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_1.txt, subtask_1_2.txt, subtask_1_3.txt, subtask_1_4.txt, subtask_1_5.txt, subtask_1_6.txt, subtask_1_7.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
sample_01.txt | WA | 1 ms | 256 KB |
sample_02.txt | WA | 1 ms | 256 KB |
sample_03.txt | WA | 1 ms | 256 KB |
subtask_1_1.txt | WA | 1 ms | 256 KB |
subtask_1_2.txt | WA | 1 ms | 256 KB |
subtask_1_3.txt | WA | 1 ms | 256 KB |
subtask_1_4.txt | WA | 1 ms | 256 KB |
subtask_1_5.txt | WA | 1 ms | 256 KB |
subtask_1_6.txt | WA | 1 ms | 256 KB |
subtask_1_7.txt | WA | 1 ms | 256 KB |