Submission #30467

#	Time	Username	Problem	Language	Result	Execution time	Memory
30467		inqr	Game (IOI14_game)	C++14	0 / 100	3 ms	19668 KiB

game

#include "game.h"
#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define rt insert
#define st first
#define nd second
#define ll long long
#define pii pair < int , int >
#define DB printf("debug\n");
#define umax( x , y ) x = max( x , (y) )
#define umin( x , y ) x = min( x , (y) )
#define all(x) x.begin() , x.end()
using namespace std;
int conto[1505];
int conto2[1505][1505];
int root[1505];
int N,totno,maxque,maxyes,maxno;
int rootfind(int a){
	if(root[a]==a)return a;
	return root[a]=rootfind(root[a]);
}
void merge(int a,int b){
	int x=a,y=b;
	root[a]=root[b]=max(rootfind(a),rootfind(b));
}
void initialize(int n) {
	N=n;
	maxque=(n)*(n-1)/(2);
	maxyes=n-1;
	maxno=maxque-maxyes;
	memset(conto2,1,sizeof(conto2));
	for(int i=0;i<n;i++){
		root[n]=n;
		conto[n]=0;
		conto2[n][n]=0;
	}
	//printf("n=%d maxque=%d maxyes=%d maxno=%d\n",n,maxque,maxyes,maxno);
}
int hasEdge2(int u,int v){
	int ur=rootfind(u),uv=rootfind(v);
	if(conto2[ur][uv]==1){
		merge(u,v);
		int rn=rootfind(u);
		for(int i=0;i<N;i++){
			if(rootfind(i)==rn){
				conto2[i][rn]=conto2[rn][i]=conto2[ur][rn]+conto2[uv][rn];
			}
		}
		return 1;
	}
	conto2[ur][uv]--;
	conto2[uv][ur]--;
	return 0;
}
int hasEdge(int u, int v) {
	return hasEdge2(u,v);
	conto[max(u,v)]++;
	if(conto[max(u,v)]==max(u,v))return 1;
    return 0;
}

Compilation message (stderr)

game.cpp: In function 'void merge(int, int)':
game.cpp:24:6: warning: unused variable 'x' [-Wunused-variable]
  int x=a,y=b;
      ^
game.cpp:24:10: warning: unused variable 'y' [-Wunused-variable]
  int x=a,y=b;
          ^

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