非题解

#include<iostream>
short n = 0;char arr[4];
int main(){
    scanf("%d",&n);
    n++;
    for(int i = 123;n;i++){
        arr[0] = i/1000,arr[1] = i/100%10,arr[2]=i/10%10,arr[3]=i%10;
        if(arr[0]!=arr[1]&&arr[0]!=arr[2]&&arr[0]!=arr[3]){
            if(arr[1] != arr[2] && arr[1] != arr[3]){
                 if(arr[2]!=arr[3]){
                       return 0;
                 }
            }
        }      
    }
    printf("%d %d %d %d",arr[0],arr[1],arr[2],arr[3]);
    return 0;
}