oj.uz

Submission #915133

# Submission time Handle Problem Language Result Execution time Memory
915133 2024-01-23T11:43:33 Z Whisper Star triangles (IZhO11_triangle) C++14
100 / 100
 259 ms 15692 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using ld = long double;
using T = tuple<ll, ll, ll>;

#define int long long
#define Base 41
#define sz(a) (int)a.size()
#define FOR(i, a, b) for ( int i = a ; i <= b ; i++ )
#define FORD(i, a, b) for (int i = b; i >= a; i --)
#define REP(i, n) for (int i = 0; i < n; ++i)
#define REPD(i, n) for (int i = n - 1; i >= 0; --i)
#define all(x) x.begin() , x.end()
#define pii pair<int , int>
#define fi first
#define se second
#define Lg(x) 31 - __builtin_clz(x)

#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)

constexpr ll LINF = (1ll << 60);
constexpr int INF = (1ll << 30);
constexpr int MAX = 3e5 + 5;
constexpr int Mod = 1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

void setupIO(){
    #define name "Whisper"
    //Phu Trong from Nguyen Tat Thanh High School for gifted student
    srand(time(NULL));
    cin.tie(nullptr)->sync_with_stdio(false); cout.tie(nullptr);
    //freopen(name".inp", "r", stdin);
    //freopen(name".out", "w", stdout);
    cout << fixed << setprecision(10);
}

template <class X, class Y>
    bool minimize(X &x, const Y &y){
        X eps = 1e-9;
        if (x > y + eps) {x = y; return 1;}
        return 0;
    }

template <class X, class Y>
    bool maximize(X &x, const Y &y){
        X eps = 1e-9;
        if (x + eps < y) {x = y; return 1;}
        return 0;
    }
int N;
map<int, int> x, y;
int u[MAX], v[MAX];
void Whisper(){
    cin >> N;
    for (int i = 1; i <= N; ++i){
        cin >> u[i] >> v[i];
        x[u[i]]++, y[v[i]]++;
    }
    int ans = 0;
    for (int i = 1; i <= N; ++i){
        ans += (x[u[i]] - 1) * (y[v[i]] - 1);
    }
    cout << ans;
}


signed main(){
    setupIO();
    int Test = 1;
//    cin >> Test;
    for ( int i = 1 ; i <= Test ; i++ ){
        Whisper();
        if (i < Test) cout << '\n';
    }
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2512 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 5 ms 3164 KB Output is correct
13 Correct 5 ms 2996 KB Output is correct
14 Correct 8 ms 3924 KB Output is correct
15 Correct 99 ms 8624 KB Output is correct
16 Correct 93 ms 8672 KB Output is correct
17 Correct 85 ms 8392 KB Output is correct
18 Correct 85 ms 8624 KB Output is correct
19 Correct 235 ms 10772 KB Output is correct
20 Correct 168 ms 12880 KB Output is correct
21 Correct 259 ms 15572 KB Output is correct
22 Correct 258 ms 15692 KB Output is correct