Submission #1113448

#	Time	Username	Problem	Language	Result	Execution time	Memory
1113448		adaawf	Duathlon (APIO18_duathlon)	C++17	5 / 100	209 ms	12368 KiB

count_triplets

#include <iostream>
#include <vector>
using namespace std;
vector<int> g[100005], v;
int dd[100005], a[15][15][15], h;
void dfs(int x) {
    v.push_back(x);
    for (int w : v) {
        a[h][x][w] = 1;
    }
    dd[x] = 1;
    for (int w : g[x]) {
        if (dd[w] == 1) continue;
        dfs(w);
    }
    dd[x] = 0;
    v.pop_back();
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n, m;
    cin >> n >> m;
    for (int i = 1; i <= m; i++) {
        int u, v;
        cin >> u >> v;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    for (int i = 1; i <= n; i++) {
        h = i;
        dfs(i);
    }
    int res = 0;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            if (i == j) continue;
            for (int k = 1; k <= n; k++) {
                if (i != k && j != k) {
                    res += a[i][j][k];
                }
            }
        }
    }
    cout << res;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 11
• Subtask 3: 0 / 8
• Subtask 4: 0 / 10
• Subtask 5: 0 / 13
• Subtask 6: 0 / 15
• Subtask 7: 0 / 20
• Subtask 8: 0 / 8
• Subtask 9: 0 / 10