제출 #151704

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
151704		willi19	친구 (IOI14_friend)	C++14	컴파일 에러	0 ms	0 KiB

friend

#include "friend.h"
#include<bits/stdc++.h>
using namespace std;
int c[100100],h[100100],p[100100],edge[12][12],dp[11000];
int ans(int state)
{
    if(!dp[state])
        return dp[state];
    int ret=0;
    for(int i=0;i<n;i++)
        if(state&(1<<i))
            ret+=c[i];
    for(int i=0;i<n;i++)
    {
        if((state&(1<<i))==1)
            continue;
        bool pos=true;
        for(int j=0;j<n;j++)
            if(edge[i][j]==1)
                pos=false;
        if(pos)
            ret=max(ret,ans(state|(1<<i)));
    }
    dp[state]=ret;
    return ret;
}
int findSample(int n,int confidence[],int host[],int protocol[]){
  	for(int i=0;i<n;i++)
    {
      c[i]=confidence[i];
      h[i]=host[i];
      p[i]=protocol[i];
    }
    for(int i=1;i<=n;i++)
    {
        if(p[i]==0)
            edge[i][h[i]]=edge[h[i]][i]=1;
        else
        {
            for(int j=0;j<n;j++)
                edge[i][j]=edge[h[i]][j];
            if(p[i]==2)
                edge[i][host[i]]=edge[host[i]][i]=1;
        }
    }
    cout<<ans(0);
}

컴파일 시 표준 에러 (stderr) 메시지

friend.cpp: In function 'int ans(int)':
friend.cpp:10:19: error: 'n' was not declared in this scope
     for(int i=0;i<n;i++)
                   ^
friend.cpp:13:19: error: 'n' was not declared in this scope
     for(int i=0;i<n;i++)
                   ^
friend.cpp: In function 'int findSample(int, int*, int*, int*)':
friend.cpp:47:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^