func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, t, x, c = 0, value[1000001], sign[1000001];   stack<int> s;   int main() {     scanf( %d , &n);     for (int i = 1; i <= n; i++) {       scanf( %d , &value[i]);       sign[i] = 1;     }     scanf( %d , &t);     for (int i = 1; i <= t; i++) {       scanf( %d , &x);       sign[x] = -1;     }     for (int i = n; i >= 1; i--) {       if (sign[i] == -1) {         s.push(i);       } else {         if (!s.empty() && value[i] == value[s.top()]) {           s.pop();         } else {           s.push(i);           sign[i] = -1;         }       }     }     if (!s.empty()) {       printf( NO );     } else {       printf( YES n );       for (int i = 1; i <= n; i++) {         printf( %d  , value[i] * sign[i]);       }     }     return 0;   }   