Submission #1481948


Source Code Expand

#include <iostream>
#include <vector>
#include <algorithm>
#include <utility>

using namespace std;
using llng = long long;
template<typename T> using v = vector<T>;
template<typename T> using vv = v<v<T> >;

int main() {
    int N, M; cin >> N >> M;
    vv<int> d(N+1, v<int>(N+1, 1e9));
    for (int i=0; i<=N; i++) d[i][i] = 0;
    v<int> s;
    for (int i=0; i<M; i++) {
        int u, v, l; cin >> u >> v >> l;
        d[u][v] = d[v][u] = l;
        if (u == 1) s.push_back(v);
    }

    for (int k=2; k<=N; k++) {
        for (int i=2; i<=N; i++) for (int j=2; j<=N; j++) {
            d[i][j] = min(d[i][j], d[i][k] + d[k][j]);
        }
    }

    int ans = 1e9;
    for (int i=0; i<s.size(); i++) {
        for (int j=i+1; j<s.size(); j++) {
            ans = min(ans, d[1][s[i]] + d[s[i]][s[j]] + d[s[j]][1]);
        }
    }
    if (ans == 1e9) cout << -1 << endl;
    else cout << ans << endl;
    return 0;
}

Submission Info

Submission Time
Task C - Blue Bird
User hidollara
Language C++14 (GCC 5.4.1)
Score 100
Code Size 960 Byte
Status AC
Exec Time 67 ms
Memory 768 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 100 / 100
Status
AC × 3
AC × 33
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All sample_01.txt, sample_02.txt, sample_03.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask1_20.txt, subtask1_21.txt, subtask1_22.txt, subtask1_23.txt, subtask1_24.txt, subtask1_25.txt, subtask1_26.txt, subtask1_27.txt, subtask1_28.txt, subtask1_29.txt, subtask1_30.txt
Case Name Status Exec Time Memory
sample_01.txt AC 1 ms 256 KB
sample_02.txt AC 1 ms 256 KB
sample_03.txt AC 1 ms 256 KB
subtask1_01.txt AC 17 ms 384 KB
subtask1_02.txt AC 17 ms 384 KB
subtask1_03.txt AC 40 ms 512 KB
subtask1_04.txt AC 1 ms 256 KB
subtask1_05.txt AC 9 ms 384 KB
subtask1_06.txt AC 40 ms 512 KB
subtask1_07.txt AC 4 ms 256 KB
subtask1_08.txt AC 4 ms 256 KB
subtask1_09.txt AC 38 ms 512 KB
subtask1_10.txt AC 17 ms 384 KB
subtask1_11.txt AC 1 ms 256 KB
subtask1_12.txt AC 20 ms 512 KB
subtask1_13.txt AC 6 ms 256 KB
subtask1_14.txt AC 3 ms 256 KB
subtask1_15.txt AC 66 ms 640 KB
subtask1_16.txt AC 48 ms 640 KB
subtask1_17.txt AC 38 ms 640 KB
subtask1_18.txt AC 53 ms 640 KB
subtask1_19.txt AC 52 ms 640 KB
subtask1_20.txt AC 43 ms 640 KB
subtask1_21.txt AC 43 ms 640 KB
subtask1_22.txt AC 63 ms 640 KB
subtask1_23.txt AC 67 ms 640 KB
subtask1_24.txt AC 42 ms 640 KB
subtask1_25.txt AC 49 ms 640 KB
subtask1_26.txt AC 61 ms 640 KB
subtask1_27.txt AC 56 ms 640 KB
subtask1_28.txt AC 40 ms 768 KB
subtask1_29.txt AC 61 ms 640 KB
subtask1_30.txt AC 37 ms 640 KB