제출 #66998

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
66998		Crown	게임 (IOI14_game)	C++14	컴파일 에러	0 ms	0 KiB

game

#include "game.h"

const int maxn = 1505;

int p[maxn];
int bw[maxn][maxn];
int n;

void initialize(int _n)
{
	n = _n;
	for(int i = 0; i< n; i++) p[i] = i;
	for(int i = 0; i< n; i++)
	{
		for(int j = i+1; j< n; j++)
		{
			bw[i][j] = bw[j][i] = 1;
		}
	}
}

int findset(int x)
{
	if(p[x] == x) return x;
	return p[x] = findset(p[x]);
}

void unionset(int x, int y)
{
	int a = findset(x), b = findset(y);
	for(int i = 0; i< n; i++)
	{
		bw[x][i] += bw[y][i];
		bw[i][x] += bw[i][y];
	}
}
int hasEdge(int u, int v)
{
	int x = findset(u), y = findset(v);
	int res = 0;
	assert(x != y);
	if(x != y && bw[x][y] == 1) res = 1;
	bw[x][y]--; bw[y][x]--;
	if(res)
	{
		unionset(x, y);
	}
	return res;
}

컴파일 시 표준 에러 (stderr) 메시지

game.cpp: In function 'void unionset(int, int)':
game.cpp:30:6: warning: unused variable 'a' [-Wunused-variable]
  int a = findset(x), b = findset(y);
      ^
game.cpp:30:22: warning: unused variable 'b' [-Wunused-variable]
  int a = findset(x), b = findset(y);
                      ^
game.cpp: In function 'int hasEdge(int, int)':
game.cpp:41:2: error: 'assert' was not declared in this scope
  assert(x != y);
  ^~~~~~
game.cpp:41:2: note: suggested alternative: 'short'
  assert(x != y);
  ^~~~~~
  short