func_code_string: #include <bits/stdc++.h>   using namespace std;   void in(long long int &number) {     bool negative = false;     register int c;     number = 0;     c = getchar();     if (c ==  - ) {       negative = true;       c = getchar();     }     for (; (c > 47 && c < 58); c = getchar()) number = number * 10 + c - 48;     if (negative) number *= -1;   }   void in(int &number) {     bool negative = false;     register int c;     number = 0;     c = getchar();     if (c ==  - ) {       negative = true;       c = getchar();     }     for (; (c > 47 && c < 58); c = getchar()) number = number * 10 + c - 48;     if (negative) number *= -1;   }   int k[100005];   int main() {     int n, m;     in(n);     in(m);     memset(k, 0, sizeof(k));     vector<long long int> a(n);     for (int i = 0; i <= n - 1; i++) in(a[i]);     vector<int> dp(n);     dp[n - 1] = 1;     k[a[n - 1]] = 1;     for (int i = n - 2; i >= 0; i--) {       if (k[a[i]] == 0) {         dp[i] = dp[i + 1] + 1;         k[a[i]] = 1;       } else         dp[i] = dp[i + 1];     }     while (m--) {       int l;       in(l);       l--;       cout << dp[l] <<   n ;     }     return 0;   }   