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Hi! I can understand why I am getting wrong answer in this. Problem no. 369
#include <iostream>

using namespace std;

#define i64 unsigned long long int

i64 dp[100][100];

i64 nCr(int n, int r)
{
if(r==n) return dp[n][r] = 1;
else if(r==0) return dp[n][r] = 1;
else if(r==1) return dp[n][r ...