func_code_string: #include <bits/stdc++.h>   using namespace std;   const int inf = 0x3f3f3f3f;   int intcmp(const void *v1, const void *v2) { return *(int *)v1 - *(int *)v2; }   inline int read() {     int x = 0, f = 1;     char cc = getchar();     while (cc <  0  || cc >  9 ) {       if (cc ==  - ) f = -1;       cc = getchar();     }     while (cc >=  0  && cc <=  9 ) {       x = x * 10 + cc -  0 ;       cc = getchar();     }     return x * f;   }   const int maxn = 100;   int c[maxn];   int n, a, b;   int main() {     n = read();     a = read();     b = read();     int cost = 0;     for (int i = 0; i < n; i++) scanf( %d , c + i);     for (int i = 0; i < n / 2; i++) {       if (c[i] != 2 && c[n - 1 - i] != 2) {         if (c[i] != c[n - 1 - i]) {           puts( -1 );           return 0;         }       } else if (c[i] == 1 || c[n - i - 1] == 1) {         cost += b;       } else if (c[i] == 2 && c[n - i - 1] == 2) {         cost += 2 * min(a, b);       } else         cost += a;     }     if (n % 2) {       if (c[n / 2] == 2) {         cost += min(a, b);       }     }     cout << cost << endl;     return 0;   }   