제출 #110963

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
110963		The_Wolfpack	동굴 (IOI13_cave)	C++14	0 / 100	10 ms	768 KiB

cave

#include "cave.h"   
#include <bits/stdc++.h>
using namespace std;

int ans[5006];
int tmp[5006]; 
int doors[5006]; 

void exploreCave(int N) 
{
    memset(ans,sizeof(ans),-1); 
    for(int i=0;i<N;i++) 
    {
        for(int i1=0;i1<5005;i1++) tmp[i1]=0;   
        for(int j=0;j<N;j++) if(ans[j]!=-1) tmp[j]=ans[j];  
        int sta=0; 
        if(tryCombination(tmp)==i) sta=1; 
        int koji;        
        int L=0;
        int R=N-1; 
        while(L<=R)
        {
            int mid=(L+R)/2; 
            for(int j=L;j<=mid;j++) tmp[j]=sta; 
            for(int j=mid+1;j<=R;j++) tmp[j]=1-sta; 
            for(int j=0;j<N;j++) if(ans[j]!=-1) tmp[j]=ans[j];      
            if(tryCombination(tmp)==i) L=mid+1; 
            else{R=mid-1; koji=mid;}
        }
        doors[koji]=i;  
        ans[koji]=sta;   
    }
    answer(ans,doors); 
}

컴파일 시 표준 에러 (stderr) 메시지

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:30:20: warning: 'koji' may be used uninitialized in this function [-Wmaybe-uninitialized]
         doors[koji]=i;  
         ~~~~~~~~~~~^~
In file included from /usr/include/string.h:635:0,
                 from /usr/include/c++/7/cstring:42,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:48,
                 from cave.cpp:2:
In function 'void* memset(void*, int, size_t)',
    inlined from 'void exploreCave(int)' at cave.cpp:11:11:
/usr/include/x86_64-linux-gnu/bits/string3.h:90:70: warning: 'void* __builtin___memset_chk(void*, int, long unsigned int, long unsigned int)': specified size 18446744073709551615 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
   return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest));
                                                                      ^

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