func_code_string: #include <bits/stdc++.h>   int main() {     int n, m, k, p = 1;     scanf( %d , &n);     m = n;     while (m != 0) {       if (m % 10 == 1) {         m = m / 10;         continue;       }       if (m % 100 == 14) {         m = m / 100;         continue;       }       if (m % 1000 == 144) {         m = m / 1000;         continue;       }       p = 0;       break;     }     if (p == 1)       printf( YES );     else       printf( NO );     return 0;   }   