제출 #377127

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
377127		kevinxiehk	동굴 (IOI13_cave)	C++17	25 / 100	813 ms	748 KiB

cave

#include<cave.h>
#ifdef __cplusplus
extern "C" {
#endif
int tryCombination(int S[]);
void answer(int S[], int D[]);
void exploreCave(int N);
#ifdef __cplusplus
}
#endif

// TODO: global variables can be declared here
void exploreCave(int N){
    int test[N],open[N],corr[N],cor[N];
    int idk[N];
    for(int i=0;i<N;i++){
        int l=0,r=N-1;
        for(int j=l;j<=r;j++)test[j]=0;
        for(int j=0;j<i;j++)test[corr[j]]=open[j];
        int a=tryCombination(test);
        if(a==-1)a=N+1;
        if(a<=i){
            open[i]=1;
            for(int j=l;j<=r;j++)test[j]=1;
            for(int j=0;j<i;j++)test[corr[j]]=open[j];
        }
        else open[i]=0;
        while(l<r){
            int mid=(l+r)/2+1;
            for(int j=mid;j<=r;j++)test[j]^=1;
            for(int j=0;j<i;j++)test[corr[j]]=open[j];
            a=tryCombination(test);
            if(a==-1)a=N+1;
            if(a<=i){
                for(int j=l;j<=r;j++)test[j]^=1;
                l=mid;
            }
            else{
                r=mid-1;
            }
        }
        corr[i]=l;
    }
    for(int i=0;i<N;i++)cor[corr[i]]=i;
    for(int i=0;i<N;i++)idk[corr[i]]=open[i];
    answer(open,cor);
  // TODO: implementation
}

컴파일 시 표준 에러 (stderr) 메시지

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:15:9: warning: variable 'idk' set but not used [-Wunused-but-set-variable]
   15 |     int idk[N];
      |         ^~~

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