제출 #1006596

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1006596		Mardonbekhazratov	게임 (IOI14_game)	C++17	컴파일 에러	0 ms	0 KiB

game

#include "game.h"
#include<bits/stdc++.h>

using namespace std;

int n;
vector<int>p,c;
vector<bool>vis;

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

bool unite(int x,int y){
    x=find(x);
    y=find(y);
    if(x==y) return 1;
}

void initialize(int N) {
    n=N;
    p.resize(n);
    iota(p.begin(),p.end(),0);
    c.assign(n,0);
    vis.assign(n,0);
}

int hasEdge(int u, int v) {
    c[u]++;
    c[v]++;
    if((c[u]==n-1&&!vis[u]) || (c[v]==n-1 && !vis[v])){
        vis[u]=true;
        vis[v]=true;
        return 1;
    }
    return 0;
}

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

int main() {
    int n, u, v;
    n = read_int();
    initialize(n);
    for (int i = 0; i < n * (n - 1) / 2; i++) {
        u = read_int();
        v = read_int();
        printf("%d\n", hasEdge(u, v));
    }
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

game.cpp: In function 'bool unite(int, int)':
game.cpp:19:1: warning: control reaches end of non-void function [-Wreturn-type]
   19 | }
      | ^
/usr/bin/ld: /tmp/ccZcpGfJ.o: in function `read_int()':
grader.cpp:(.text+0x0): multiple definition of `read_int()'; /tmp/cccPbXxJ.o:game.cpp:(.text+0x2e0): first defined here
/usr/bin/ld: /tmp/ccZcpGfJ.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cccPbXxJ.o:game.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status