Submission #986450

#	Time	Username	Problem	Language	Result	Execution time	Memory
986450		Rifal	Game (IOI14_game)	C++14	15 / 100	1 ms	4444 KiB

game

#include <bits/stdc++.h>
#include "game.h"
using namespace std;
const int N = 1500 + 5;
int cnt[N][N], ran[N], p[N], siz[N];
bool ok[N];
int nn;
int fin(int a) {
    if(p[a] == a) return a;
    else return p[a] = fin(p[a]);
}
void mer(int a, int b) {
    if(ran[a] < ran[b]) swap(a,b);
    if(ran[a] == ran[b]) ran[a]++;
    p[b] = a;
}
void initialize(int n) {
    int nn = n;
    for(int i = 0; i < n; i++) {
        p[i] = i;
        siz[i] = 1;
    }
}
int hasEdge(int u, int v) {
    u = fin(u); v = fin(v);   
    cnt[u][v]++; cnt[v][u]++;
    for(int i = 0; i < nn; i++) ok[i] = 0;
    if(siz[u]*siz[v] == cnt[u][v]) {
        mer(u,v);
        int x = fin(u);
        siz[x] = siz[u]+siz[v];
        for(int i = 0; i < nn; i++) {
            int y = fin(i);
            if(ok[y] == 1) continue;
            ok[y] = 1;
            cnt[x][y] = cnt[u][y] + cnt[v][y];
            cnt[y][x] = cnt[x][y];
        }
        return 1;
    }
    else {
        return 0;
    }
} 

Compilation message (stderr)

game.cpp: In function 'void initialize(int)':
game.cpp:18:9: warning: unused variable 'nn' [-Wunused-variable]
   18 |     int nn = n;
      |         ^~

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