oj.uz

Submission #514822

# Submission time Handle Problem Language Result Execution time Memory
514822 2022-01-18T14:19:05 Z Be_dos Star triangles (IZhO11_triangle) C++17
100 / 100
 588 ms 12120 KB 
#include <iostream>
#include <cmath>
#include <cctype>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#include <deque>
#include <stack>
#include <unordered_set>
#include <sstream>
#include <cstring>
#include <iomanip>
#include <queue>
#include <unordered_map>
#include <random>
#include <cfloat>
#include <chrono>
#include <bitset>
#include <complex>
#include <immintrin.h>
#include <cassert>

int main() {
    int32_t n;
    std::cin >> n;

    std::map<int32_t, int32_t> per_x, per_y;
    std::pair<int32_t, int32_t>* points = new std::pair<int32_t, int32_t>[n];
    for(int32_t i = 0; i < n; i++) {
        int32_t x, y;
        std::cin >> x >> y;

        per_x[x]++;
        per_y[y]++;
        points[i] = {x, y};
    }

    int64_t ans = 0;
    for(int32_t i = 0; i < n; i++)
        ans += (int64_t)(per_x[points[i].first] - 1) * (per_y[points[i].second] - 1);
    std::cout << ans;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 288 KB Output is correct
2 Correct 0 ms 288 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 292 KB Output is correct
11 Correct 2 ms 368 KB Output is correct
12 Correct 10 ms 896 KB Output is correct
13 Correct 12 ms 1008 KB Output is correct
14 Correct 15 ms 1356 KB Output is correct
15 Correct 161 ms 6132 KB Output is correct
16 Correct 199 ms 6440 KB Output is correct
17 Correct 159 ms 6080 KB Output is correct
18 Correct 159 ms 6048 KB Output is correct
19 Correct 421 ms 11452 KB Output is correct
20 Correct 354 ms 9164 KB Output is correct
21 Correct 507 ms 12080 KB Output is correct
22 Correct 588 ms 12120 KB Output is correct