Submission #393958

#	Time	Username	Problem	Language	Result	Execution time	Memory
393958		79brue	Duathlon (APIO18_duathlon)	C++14	0 / 100	62 ms	6500 KiB

count_triplets

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int n, m;
vector<int> link[100002];

int main(){
    scanf("%d %d", &n, &m);
    for(int i=1; i<=m; i++){
        int x, y;
        scanf("%d %d", &x, &y);
        link[x].push_back(y);
        link[y].push_back(x);
    }
    printf("%lld", ll(n) * ll(n-1) * ll(n-2) / 3);
}

Compilation message (stderr)

count_triplets.cpp: In function 'int main()':
count_triplets.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
count_triplets.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   14 |         scanf("%d %d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 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