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Submission #304150

# Submission time Handle Problem Language Result Execution time Memory
304150 2020-09-21T03:40:09 Z _Ibrohim_ Star triangles (IZhO11_triangle) C++14
100 / 100
 579 ms 15736 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define fr first
#define sc second
#define ld long double

using namespace std;

    const ll N = 3e5 + 7;
    const ll mod = 1e9 + 7;

ll n , x[N] , y[N];
map < ll , ll > X , Y;

void solve(){
    cin >> n;
    for(int i = 1; i <= n; ++ i){
        cin >> x[i] >> y[i];
        X[x[i]] ++;
        Y[y[i]] ++;
    }
    ll ans = 0;
    for(int i = 1; i <= n; ++ i){
        X[x[i]] --;
        Y[y[i]] --;
        ans += X[x[i]] * Y[y[i]];
        X[x[i]] ++;
        Y[y[i]] ++;
    }
    cout << ans;
}

main(){
/// ******************************
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    ll tt = 1;
/// ******************************

    //cin >> tt;
    while(tt --){
        solve();
    }
    return 0;
}

/**



**/

Compilation message

triangle.cpp:34:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   34 | main(){
      |      ^

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 288 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 9 ms 1280 KB Output is correct
14 Correct 16 ms 1792 KB Output is correct
15 Correct 190 ms 8048 KB Output is correct
16 Correct 203 ms 8312 KB Output is correct
17 Correct 215 ms 8056 KB Output is correct
18 Correct 202 ms 7928 KB Output is correct
19 Correct 543 ms 14968 KB Output is correct
20 Correct 407 ms 12012 KB Output is correct
21 Correct 579 ms 15736 KB Output is correct
22 Correct 576 ms 15736 KB Output is correct