func_code_string: #include <bits/stdc++.h>   using namespace std;   int n;   char dir[200005];   int l[200005], r[200005], ll, rl;   int ans = 0x7fffffff;   int main() {     cin >> n;     getchar();     for (int i = 1; i <= n; i++) scanf( %c , &dir[i]);     for (int i = 1; i <= n; i++)       if (dir[i] ==  L )         scanf( %d , &l[++ll]);       else         scanf( %d , &r[++rl]);     if (ll == 0 || rl == 0) {       puts( -1 );       return 0;     }     int nowl = 1, nowr = 1;     for (nowl = 1; nowl <= ll; nowl++) {       do {         nowr++;       } while (nowr <= rl && r[nowr] < l[nowl]);       nowr--;       if (l[nowl] - r[nowr] > 0) ans = min(ans, l[nowl] - r[nowr]);     }     if (ans == 0x7fffffff) {       puts( -1 );       return 0;     } else       cout << (ans >> 1) << endl;     return 0;   }   