Submission #31716

#	Time	Username	Problem	Language	Result	Execution time	Memory
31716		top34051	Game (IOI14_game)	C++14	0 / 100	0 ms	19660 KiB

game

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

int n, ok;
int cnt[maxn];
int edge[maxn][maxn];
vector<int> dst, src;

void gentree() {
    int i,a,b;
    for(i=1;i<=n;i++) dst.push_back(i);
    random_shuffle(dst.begin(),dst.end());
    src.push_back(dst[0]);
    for(i=1;i<n;i++) {
        a = src[rand()%src.size()];
        b = dst[i];
        src.push_back(b);
        edge[a][b] = edge[b][a] = 1;
    }
}

void initialize(int N) {
    int i,x;
    n = N;
    if(n>4) gentree();
    else if(n<10) printf("%d",1/0);
    else {
        ok = n*(n-1)/2 - (n-1);
        memset(cnt,0,sizeof(cnt));
    }
}

int hasEdge(int u, int v) {
    if(n>4) return edge[u][v];
    if(ok && cnt[u]+1<n-1 && cnt[v]+1!=n-1) {
        cnt[u]++; cnt[v]++; ok--;
        return 0;
    }
    return 1;
}

Compilation message (stderr)

game.cpp: In function 'void initialize(int)':
game.cpp:28:32: warning: division by zero [-Wdiv-by-zero]
     else if(n<10) printf("%d",1/0);
                                ^
game.cpp:25:9: warning: unused variable 'i' [-Wunused-variable]
     int i,x;
         ^
game.cpp:25:11: warning: unused variable 'x' [-Wunused-variable]
     int i,x;
           ^

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