1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
#include <iostream>

using namespace std;

typedef unsigned long long int ull;

int n, k, pom, res=2019;

ull newton(int a, int b)
{
    double r=1;
    for(int i=1; i<=b; ++i)
    {
        r=r*(a-i+1)/i;
    }
    return (ull)r;
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    cin >> n >> k;
    for(int i=0; i<n; ++i)
    {
        for(int j=0; j<i+1; ++j)
        {
            cin >> pom;
            if(i<k && newton(i, j)>=1)
            {
                if((newton(i, j)+i)<=k && pom<res) res=pom;
            }
        }
    }
    cout << res << endl;
    return 0;
}