oj.uz

Submission #546318

# Submission time Handle Problem Language Result Execution time Memory
546318 2022-04-07T08:43:15 Z krit3379 Star triangles (IZhO11_triangle) C++17
100 / 100
 388 ms 13204 KB 
#include<bits/stdc++.h>
using namespace std;
#define N 300005

int x[N],y[N];
long long ans;
map<int,long long> mpx,mpy;

int main(){
    int n,i;
    scanf("%d",&n);
    for(i=1;i<=n;i++){
        scanf("%d %d",&x[i],&y[i]);
        mpx[x[i]]++;
        mpy[y[i]]++;
    }
    for(i=1;i<=n;i++){
        ans+=(mpx[x[i]]-1)*(mpy[y[i]]-1);
    }
    printf("%lld",ans);
    return 0;
}

Compilation message

triangle.cpp: In function 'int main()':
triangle.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
triangle.cpp:13:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |         scanf("%d %d",&x[i],&y[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 308 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 6 ms 1088 KB Output is correct
13 Correct 6 ms 1220 KB Output is correct
14 Correct 10 ms 1620 KB Output is correct
15 Correct 115 ms 7044 KB Output is correct
16 Correct 138 ms 7400 KB Output is correct
17 Correct 106 ms 7052 KB Output is correct
18 Correct 112 ms 7116 KB Output is correct
19 Correct 308 ms 12544 KB Output is correct
20 Correct 235 ms 10172 KB Output is correct
21 Correct 308 ms 13204 KB Output is correct
22 Correct 388 ms 13192 KB Output is correct