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Submission #18635

# Submission time Handle Problem Language Result Execution time Memory
18635 2016-02-13T04:53:05 Z mindol Star triangles (IZhO11_triangle) C++14
100 / 100
 203 ms 7036 KB 
#include<cstdio>
#include<unordered_map>
using namespace std;
unordered_map<int,int> X,Y;
int x[300001],y[300001];
int main()
{
    int n;
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
        scanf("%d %d",&x[i],&y[i]), X[x[i]]++, Y[y[i]]++;
    long long ans=0;
    for(int i=1;i<=n;i++)
        ans+=(X[x[i]]-1ll)*(Y[y[i]]-1);
    printf("%lld",ans);
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 3924 KB Output is correct
2 Correct 0 ms 3924 KB Output is correct
3 Correct 0 ms 3924 KB Output is correct
4 Correct 0 ms 3924 KB Output is correct
5 Correct 0 ms 3924 KB Output is correct
6 Correct 0 ms 3924 KB Output is correct
7 Correct 0 ms 3924 KB Output is correct
8 Correct 0 ms 3924 KB Output is correct
9 Correct 0 ms 3924 KB Output is correct
10 Correct 0 ms 3924 KB Output is correct
11 Correct 0 ms 3924 KB Output is correct
12 Correct 3 ms 4336 KB Output is correct
13 Correct 6 ms 4344 KB Output is correct
14 Correct 9 ms 4628 KB Output is correct
15 Correct 72 ms 7032 KB Output is correct
16 Correct 64 ms 7032 KB Output is correct
17 Correct 58 ms 7036 KB Output is correct
18 Correct 76 ms 7032 KB Output is correct
19 Correct 116 ms 7032 KB Output is correct
20 Correct 110 ms 7032 KB Output is correct
21 Correct 203 ms 7032 KB Output is correct
22 Correct 173 ms 7032 KB Output is correct