Submission #778814

#	Time	Username	Problem	Language	Result	Execution time	Memory
778814		jakobrs	Game (IOI14_game)	C++17	42 / 100	1086 ms	2720 KiB

game

#include <cstdint>
#include <vector>
#include "game.h"

using i64 = int64_t;

const i64 MAXN = 1500;

i64 N;
bool adj[MAXN][MAXN];

void initialize(int n) {
    N = n;
    for (i64 i = 0; i < N; i++) {
        for (i64 j = 0; j < N; j++) {
            if (i != j) adj[i][j] = true;
        }
    }
}

bool connected(int u, int v) {
    std::vector<int> stack;
    std::vector<bool> visited(N, false);
    stack.push_back(u);

    while (!stack.empty()) {
        int i = stack.back();
        stack.pop_back();

        if (visited[i]) {
            continue;
        }
        visited[i] = true;

        if (i == v) return true;

        for (int j = 0; j < N; j++) {
            if (adj[i][j] && !visited[j]) {
                stack.push_back(j);
            }
        }
    }

    return false;
}

int hasEdge(int u, int v) {
    adj[u][v] = false;
    adj[v][u] = false;
    if (connected(u, v)) {
        return false;
    } else {
        adj[u][v] = true;
        adj[v][u] = true;
        return true;
    }
}

• Subtask 1: 15 / 15
• Subtask 2: 27 / 27
• Subtask 3: 0 / 58