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Submission #344249

# Submission time Handle Problem Language Result Execution time Memory
344249 2021-01-05T10:25:58 Z katearima Star triangles (IZhO11_triangle) C++14
100 / 100
 671 ms 12396 KB 
#include <bits/stdc++.h>
#define ss second
#define ff first
using namespace std;
const int N=3e5+10;
int n, x[N], y[N], ans;
map<int, int> fx, fy;
main(){
    cin>>n;
    for(int i=0; i<n; i++){
        cin>>x[i]>>y[i];
        fx[x[i]]++;
        fy[y[i]]++;
    }
    for(int i=0; i<n; i++){
        ans+=(fx[x[i]]-1)*(fy[y[i]]-1);
    }
    cout<<ans<<endl;



}

Compilation message

triangle.cpp:8:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    8 | main(){
      |      ^

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 376 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 3 ms 364 KB Output is correct
12 Correct 15 ms 1152 KB Output is correct
13 Correct 14 ms 1132 KB Output is correct
14 Correct 18 ms 1516 KB Output is correct
15 Correct 200 ms 6252 KB Output is correct
16 Correct 229 ms 6508 KB Output is correct
17 Correct 240 ms 6252 KB Output is correct
18 Correct 195 ms 6252 KB Output is correct
19 Correct 671 ms 11628 KB Output is correct
20 Correct 445 ms 9324 KB Output is correct
21 Correct 625 ms 12396 KB Output is correct
22 Correct 652 ms 12140 KB Output is correct