Submission #301655

#	Time	Username	Problem	Language	Result	Execution time	Memory
301655		kevinsogo	Game (IOI14_game)	C++17	100 / 100	596 ms	15908 KiB

game

#include <bits/stdc++.h>
#include "game.h"
using namespace std;

vector<vector<int>> counts;
vector<int> mins, sz;
int n;
void initialize(int n) {
    ::n = n;
    counts = vector<vector<int>>(n, vector<int>(n));
    mins = vector<int>(n);
    sz = vector<int>(n, 1);
    iota(mins.begin(), mins.end(), 0);
}

void merge(int u, int v) {
    if (u > v) swap(u, v);
    assert(u < v);
    sz[u] += sz[v];
    for (int i = 0; i < n; i++) {
        if (mins[i] == v) mins[i] = u;
    }
    for (int i = 0; i < n; i++) {
        counts[i][u] += counts[i][v];
        counts[u][i] += counts[v][i];
    }
}

int hasEdge(int u, int v) {
    u = mins[u], v = mins[v];
    counts[u][v]++, counts[v][u]++;
    if (counts[u][v] == sz[u] * sz[v]) {
        merge(u, v);
        return 1;
    }
    return 0;
}

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