func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     map<int, int, greater<int>> input;     map<int, int, greater<int>> output;     map<int, int, greater<int>> input_reverse;     map<int, int, greater<int>> output_reverse;     int N;     scanf( %d , &N);     ;     int i = N;     int index = 1;     while (i--) {       int x;       scanf( %d , &x);       input[index] = x;       input_reverse[x] = index++;     }     index = 1;     while (N--) {       int x;       scanf( %d , &x);       output[index] = x;       output_reverse[x] = index++;     }     map<int, int, greater<int>>::iterator it1;     int val = 0;     int count_val = 0;     it1 = input.begin();     while (!input.empty()) {       int x = (*it1).second;       if (x != (*(output.begin())).second) {         val = val + count_val + 1;         count_val = 0;       } else {         count_val++;       }       it1++;       input.erase((*(input_reverse.find(x))).second);       output.erase((*(output_reverse.find(x))).second);     }     printf( %d n , val);   }   