oj.uz

Submission #37257

# Submission time Handle Problem Language Result Execution time Memory
37257 2017-12-23T06:40:03 Z Yusup01 Star triangles (IZhO11_triangle) C++14
0 / 100
 0 ms 6868 KB 
#include<bits/stdc++.h>
using namespace std;
long long x[300009],y[300009],jog;
int n;
map<long long,int> X,Y;
int main()
{
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	freopen("triangle.in","r",stdin);
	freopen("triangle.out","w",stdout);
	cin>>n;
	for(int i=1;i<=n;i++){cin>>x[i]>>y[i]; X[x[i]]++; Y[y[i]]++;}
	for(int i=1;i<=n;i++)
	{
		jog+=(X[x[i]]-1)*(Y[y[i]]-1);
	}
	cout<<jog;
}

Compilation message

triangle.cpp: In function 'int main()':
triangle.cpp:9:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("triangle.in","r",stdin);
                                  ^
triangle.cpp:10:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("triangle.out","w",stdout);
                                    ^

Subtask #1
0 / 100.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 ms 6868 KB Execution killed because of forbidden syscall [unknown syscall - gap in table] (292)
2 Halted 0 ms 0 KB -