func_code_string: #include <bits/stdc++.h>   using namespace std;   struct node {     int days;     int index;   };   bool compare(node lhs, node rhs) { return (lhs.days < rhs.days); }   int main() {     int n, k;     int sum = 0;     scanf( %d%d , &n, &k);     node a[n + 1];     for (int i = 1; i <= n; i++) {       scanf( %d , &a[i].days);       a[i].index = i;     }     sort(a + 1, a + n + 1, compare);     int i = 1;     sum = a[i].days;     while (sum <= k) {       i++;       if (i <= n)         sum += (a[i].days);       else         break;     }     printf( %d n , i - 1);     if (i != 1) {       for (int j = 1; j < i; j++) printf( %d  , a[j].index);       printf(  n );     }     return 0;   }   