# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
976053 | vjudge1 | Star triangles (IZhO11_triangle) | C++17 | 396 ms | 9068 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define int long long
#define ld long double
using namespace std;
const int n=3e5+5;
signed main(){
int a; cin>>a;
int ax[n], ay[n];
map<int,int>jumlahx;
map<int,int>jumlahy;
for(int i=0;i<a;i++){
cin>>ax[i]>>ay[i];
jumlahx[ax[i]]++;
jumlahy[ay[i]]++;
}
int ans=0;
for (int i=0;i<a;i++){
ans+=(jumlahx[ax[i]]-1)*(jumlahy[ay[i]]-1);
}
cout<<ans<<endl;
}
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
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