#include<stdio.h>
int main(){
    int n,i,oddFound =0;
    int arr[10];
    scanf("%d",&arr[i]);
    if (arr[i] %2 !=0)
        oddFound =1;
}
 if (!oddFound){
     printf("Invalid input");
 }else{
    for(i =0; i< n; i++){
        if (arr[i] %2 1=0)
            printf("1");
        else
            printf("%d", arr[i]);        
    } 

 }
  return 0;
  }