oj.uz

Submission #76990

# Submission time Handle Problem Language Result Execution time Memory
76990 2018-09-19T19:26:59 Z farukkastamonuda Star triangles (IZhO11_triangle) C++14
100 / 100
 186 ms 17020 KB 
#include <bits/stdc++.h>
#define li 300005
using namespace std;
int n,x[li],y[li];
long long int cev;
unordered_map<int,int> xx,yy;
int main(){
    scanf("%d",&n);
    for(int i=1;i<=n;i++){
        scanf("%d %d",&x[i],&y[i]);
        xx[x[i]]++;
        yy[y[i]]++;
    }
    for(int i=1;i<=n;i++){
        cev+=1ll*(xx[x[i]]-1)*(yy[y[i]]-1);
    }
    printf("%lld\n",cev);
    return 0;
}

Compilation message

triangle.cpp: In function 'int main()':
triangle.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
triangle.cpp:10:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d",&x[i],&y[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 432 KB Output is correct
4 Correct 2 ms 548 KB Output is correct
5 Correct 2 ms 568 KB Output is correct
6 Correct 2 ms 580 KB Output is correct
7 Correct 2 ms 584 KB Output is correct
8 Correct 2 ms 636 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 648 KB Output is correct
11 Correct 2 ms 656 KB Output is correct
12 Correct 8 ms 1444 KB Output is correct
13 Correct 8 ms 1472 KB Output is correct
14 Correct 25 ms 2088 KB Output is correct
15 Correct 73 ms 7008 KB Output is correct
16 Correct 74 ms 9484 KB Output is correct
17 Correct 68 ms 11500 KB Output is correct
18 Correct 68 ms 13692 KB Output is correct
19 Correct 186 ms 16692 KB Output is correct
20 Correct 125 ms 16692 KB Output is correct
21 Correct 185 ms 16908 KB Output is correct
22 Correct 175 ms 17020 KB Output is correct