func_code_string: #include <bits/stdc++.h>   using namespace std;   double dp[2005][2005];   int main() {     ios::sync_with_stdio(0);   a:     int n, t;     double p;     cin >> n >> p >> t;     dp[0][0] = 1.0;     for (int i = 1; i <= t; i++) dp[i][0] = dp[i - 1][0] * (1.0 - p);     for (int j = 1; j <= n; j++) dp[0][j] = 0.0;     for (int i = 1; i <= t; i++) {       for (int j = 1; j <= n; j++) {         if (j == n)           dp[i][j] = dp[i - 1][j - 1] * p + dp[i - 1][j];         else           dp[i][j] = dp[i - 1][j - 1] * p + dp[i - 1][j] * (1.0 - p);       }     }     double res = 0.0;     for (int i = 0; i <= n; i++) res += (dp[t][i] * ((double)i));     printf( %.10f n , (double)res);   }   