Submission #932675

#	Time	Username	Problem	Language	Result	Execution time	Memory
932675		Whisper	Kutije (COCI21_kutije)	C++17	70 / 70	148 ms	9556 KiB

Main

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define int long long
#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 pii pair<int , int>
#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 = 1e3 + 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 nToy, nFriend, numQuery;
int a[MAX][MAX];
struct Dsu{
    int n;
    vector<int> par, sz;
    Dsu(int _n){
        this -> n = _n;
        par.resize(n + 5);
        sz.resize(n + 5, 1);
        iota(par.begin(), par.end(), 0ll);
    }
    int Find(int u){
        return u == par[u] ? u : par[u] = Find(par[u]);
    }
    bool unite(int u, int v){
        u = Find(u), v = Find(v);
        if (u == v) return 0;
        if (sz[u] < sz[v]) swap(u, v);
        sz[u] += sz[v];
        par[v] = u;
        return 1;
    }
};
void Whisper(){
    cin >> nToy >> nFriend >> numQuery;
    Dsu dsu(nToy);
    FOR(i, 1, nFriend) FOR(j, 1, nToy){
        int x; cin >> x;
        dsu.unite(x, j);
    }

    for (int i = 1; i <= numQuery; ++i){
        int u, v; cin >> u >> v;
        cout << (dsu.Find(u) == dsu.Find(v) ? "DA" : "NE") << '\n';
    }
}


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

• Subtask 1: 15 / 15
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 35 / 35