Submission #31721

#	Time	Username	Problem	Language	Result	Execution time	Memory
31721		top34051	Game (IOI14_game)	C++14	100 / 100	889 ms	19664 KiB

game

#include "game.h"
#include <bits/stdc++.h>
using namespace std;
#define maxn 1505

int n;
int head[maxn];
int way[maxn][maxn];
int temp[maxn];

int findhead(int x) {
    if(head[x]==x) return x;
    return head[x] = findhead(head[x]);
}

void initialize(int N) {
    int i,j;
    n = N;
    for(i=0;i<n;i++) head[i] = i;
    for(i=0;i<n;i++) for(j=0;j<n;j++) way[i][j] = 1;
}

int hasEdge(int u, int v) {
    u = findhead(u); v = findhead(v);
    if(u==v) return 0;
    if(way[u][v]==1) {
        for(int i=0;i<n;i++) temp[i] = way[u][i] + way[v][i];
        head[findhead(v)] = findhead(u);
        for(int i=0;i<n;i++) way[findhead(u)][i] = way[i][findhead(u)] = temp[i];
        return 1;
    }
    else {
        way[u][v]--; way[v][u]--;
        return 0;
    }
}

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