제출 #113962

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
113962		baqargam	게임 (IOI14_game)	C++14	컴파일 에러	0 ms	0 KiB

game

#include <cstdio>
#include <cassert>
#include "game.h"

using namespace std;
int n,m,k,l,i,j,a,b,col[1505],sz[1505],d[1505][1505];

int read_int() {
    int x;
    assert(scanf("%d", &x) == 1);
    return x;
}

void unite(int a,int b){
    sz[a]+=sz[b];
    for(int i=0;i<n;i++){
        if(col[i]==b) col[i]=a;
        d[a][i]+=d[b][i];
    }
}

int hasEdge(int a,int b){
    if(d[col[a]][col[b]]+1==sz[a]*sz[b])
    {
        unite(col[a],col[b]);
        return 1;
    }
    else
        return 0;
}

int main() {
    int  u, v;
    n = read_int();
    initialize(n);
    for (int i = 0; i < n * (n - 1) / 2; i++) {
        a = read_int();
        b = read_int();

        printf("%d\n", hasEdge(u, v));
    }
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

game.cpp: In function 'int main()':
game.cpp:40:15: warning: 'u' may be used uninitialized in this function [-Wmaybe-uninitialized]
         printf("%d\n", hasEdge(u, v));
         ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
game.cpp:40:15: warning: 'v' may be used uninitialized in this function [-Wmaybe-uninitialized]
/tmp/ccKzTLyT.o: In function `read_int()':
grader.cpp:(.text+0x0): multiple definition of `read_int()'
/tmp/ccAKjXz0.o:game.cpp:(.text+0x0): first defined here
/tmp/ccKzTLyT.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccAKjXz0.o:game.cpp:(.text.startup+0x0): first defined here
/tmp/ccAKjXz0.o: In function `main':
game.cpp:(.text.startup+0xf): undefined reference to `initialize(int)'
/tmp/ccKzTLyT.o: In function `main':
grader.cpp:(.text.startup+0x14): undefined reference to `initialize(int)'
collect2: error: ld returned 1 exit status