func_code_string: #include <bits/stdc++.h>   int main() {     int N, A, B, C;     char Error = 0;     scanf( %d , &N);     while (N) {       A = N % 10;       B = N % 100;       C = N % 1000;       if (A == 1) {         N /= 10;       } else if (B == 14) {         N /= 100;       } else if (C == 144) {         N /= 1000;       } else {         Error = 1;         break;       }     }     puts(Error ?  NO  :  YES );     return 0;   }   