Submission #2451285

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Source Code Expand

#include<stdio.h>
#include<algorithm>
#include<string.h>
using namespace std;
char ch[20];
char in[20];
int perm[7]={1,3,5,7,9};
bool chk(long long a){
	for(long long i=2;i*i<=a;i++){
		if(a%i==0)return false;
	}
	return true;
}
int main(){
	scanf("%s",in);
	int n=strlen(in);
	int sz=0;
	for(int i=0;i<n;i++){
		bool fi=false;
		for(int j=0;j<sz;j++){
			if(in[i]==ch[j])fi=true;
		}
		if(!fi){
			ch[sz++]=in[i];
		}
	}
	if(sz>5){
		printf("-1\n");return 0;
	}
	do{
		long long val=0;
		for(int i=0;i<n;i++){
			val*=10;
			for(int j=0;j<sz;j++){
				if(ch[j]==in[i])val+=perm[j];
			}
		}
		if(val>1&&chk(val)){
			printf("%lld\n",val);return 0;
		}
	}while(next_permutation(perm,perm+5));
	printf("-1\n");
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:15:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",in);
                ^

Judge Result