#include <bits/stdc++.h>   char bar[1000002];   int main() {     scanf( %s , bar);     int n = strlen(bar);     long long int left = 0, mid = 0, right = 0;     for (int i = 0; bar[i] !=  ^ ; i++) mid = i + 1;     for (int i = 0; bar[i] !=  ^ ; i++)       if (bar[i] !=  = ) left += (mid - i) * (bar[i] -  0 );     for (int i = n - 1; bar[i] !=  ^ ; i--)       if (bar[i] !=  = ) right += (i - mid) * (bar[i] -  0 );     if (left < right) puts( right );     if (right < left) puts( left );     if (right == left) puts( balance );     return 0;   }   