Submission #782259

#	Time	Username	Problem	Language	Result	Execution time	Memory
782259		Andrey	Game (IOI14_game)	C++14	100 / 100	287 ms	15768 KiB

game

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

int br[1501][1501];
vector<int> dsu(1501);
int k;

int calc(int a) {
    int c = a,d;
    while(dsu[a] != a) {
        a = dsu[a];
    }
    while(c != dsu[c]) {
        d = dsu[c];
        dsu[c] = a;
        c = d;
    }
    return a;
}

void initialize(int n) {
    k = n;
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            br[i][j] = 1;
        }
    }
    for(int i = 0; i < n; i++) {
        dsu[i] = i;
    }
}

int hasEdge(int u, int v) {
    int a = calc(u),b = calc(v);
    if(br[a][b] == 1) {
        br[a][b] = 0;
        br[b][a] = 0;
        dsu[b] = a;
        for(int i = 0; i < k; i++) {
            br[a][i] = br[a][i]+br[b][i];
            br[i][a] = br[a][i];
        }
        return 1;
    }
    else {
        br[a][b]--;
        br[b][a]--;
        return 0;
    }
}

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