oj.uz

Submission #51978

# Submission time Handle Problem Language Result Execution time Memory
51978 2018-06-22T20:25:23 Z FLDutchman Star triangles (IZhO11_triangle) C++17
100 / 100
 886 ms 45196 KB 
#include "bits/stdc++.h"
using namespace std;

#define int long long
#define FOR(i, l, r) for(int i = l; i < r; i++)
#define snd second
#define fst first
#define pb push_back

typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;

vii ps;
map<int, int> xc, yc;
int N;


signed main(){
    cin >> N;
    FOR(i, 0, N){
        int x, y;
        cin >> x >> y;
        ps.pb({x, y});
        xc[x]++; yc[y]++;
    }
    int sum = 0;
    for(ii &p : ps){
        sum += (xc[p.fst]-1) * (yc[p.snd] - 1);
    }
    cout << sum;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 248 KB Output is correct
2 Correct 2 ms 356 KB Output is correct
3 Correct 3 ms 432 KB Output is correct
4 Correct 2 ms 636 KB Output is correct
5 Correct 2 ms 636 KB Output is correct
6 Correct 2 ms 660 KB Output is correct
7 Correct 3 ms 804 KB Output is correct
8 Correct 3 ms 804 KB Output is correct
9 Correct 3 ms 812 KB Output is correct
10 Correct 3 ms 852 KB Output is correct
11 Correct 4 ms 852 KB Output is correct
12 Correct 19 ms 1720 KB Output is correct
13 Correct 21 ms 1888 KB Output is correct
14 Correct 27 ms 2608 KB Output is correct
15 Correct 312 ms 8920 KB Output is correct
16 Correct 296 ms 11492 KB Output is correct
17 Correct 252 ms 13544 KB Output is correct
18 Correct 275 ms 15708 KB Output is correct
19 Correct 886 ms 28400 KB Output is correct
20 Correct 505 ms 28400 KB Output is correct
21 Correct 787 ms 38700 KB Output is correct
22 Correct 795 ms 45196 KB Output is correct