Submission #867942

#	Time	Username	Problem	Language	Result	Execution time	Memory
867942		becaido	Kutije (COCI21_kutije)	C++17	70 / 70	174 ms	10544 KiB

Main

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,popcnt,sse4,abm")
#include <bits/stdc++.h>
using namespace std;

#ifdef WAIMAI
#define debug(HEHE...) cout << "[" << #HEHE << "] : ", dout(HEHE)
void dout() {cout << '\n';}
template<typename T, typename...U>
void dout (T t, U...u) {cout << t << (sizeof... (u) ? ", " : ""), dout (u...);}
#else
#define debug(...) 7122
#endif

#define ll long long
#define Waimai ios::sync_with_stdio(false), cin.tie(0)
#define FOR(x,a,b) for (int x = a, I = b; x <= I; x++)
#define pb emplace_back
#define F first
#define S second

const int SIZE = 1005;

int n, m, q;
bool g[SIZE][SIZE];

void solve() {
    cin >> n >> m >> q;
    while (m--) {
        FOR (i, 1, n) {
            int p;
            cin >> p;
            g[p][i] = 1;
        }
    }
    FOR (k, 1, n) FOR (i, 1, n) if (g[i][k]) FOR (j, 1, n) g[i][j] |= g[k][j];
    while (q--) {
        int a, b;
        cin >> a >> b;
        cout << (g[a][b] ? "DA" : "NE") << '\n';
    }
}

int main() {
    Waimai;
    solve();
}

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