Submission #72173

#	Time	Username	Problem	Language	Result	Execution time	Memory
72173		(#118)	Judge Against Wrong Code (FXCUP3_judge)	C++17	0 / 100	2 ms	248 KiB

judge

#include<cstdio>
#include<algorithm>
#include<vector>
using namespace std;

bool attack[1<<20];
int target[1<<20];

int X,D,C;

char buff[22];

char ans[555555];

int main(){
    scanf("%d",&X);
    scanf("%d",&D);

    for(int i=0;i<D;i++){
        scanf("%s",buff);
        int cur = 0;
        for(int i=0;i<X;i++) if(buff[i]=='o') cur |= (1<<i);
        attack[cur] = true;
    }

    scanf("%d",&C);
    for(int i=0;i<C;i++){
        scanf("%s",buff);
        int cur = 0;
        for(int i=0;i<X;i++) if(buff[i]=='x') cur |= (1<<i);
        target[cur]++;
    }

    attack[0] = target[0] = 0;

    for(int i=1;i<(1<<X);i++){
        int cur = 0;
        for(int j=i;j;j=((j-1)&i)) if(attack[j]){
            cur |= j;
            if(cur==i){
                attack[i] = true;
                break;
            }
        }
    }

    for(int i=1;i<=C;i++) ans[i] = 'x';
    for(int i=0;i<(1<<X);i++) if(attack[i]){
        int cur = C-target[0];
        int nonattack = ((1<<X)-1)^i;
        for(int j=nonattack;j;j=(j-1)&nonattack) cur -= target[j];
        ans[cur] = 'o';
    }

    printf("%s",ans+1);
    return 0;
}

Compilation message (stderr)

judge.cpp: In function 'int main()':
judge.cpp:34:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
     attack[0] = target[0] = 0;
                 ~~~~~~~~~~^~~
judge.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&X);
     ~~~~~^~~~~~~~~
judge.cpp:17:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&D);
     ~~~~~^~~~~~~~~
judge.cpp:20:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s",buff);
         ~~~~~^~~~~~~~~~~
judge.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&C);
     ~~~~~^~~~~~~~~
judge.cpp:28:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s",buff);
         ~~~~~^~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 39
• Subtask 3: 0 / 51