#include <bits/stdc++.h>
using namespace std;
#define f(i,k,n) for(int i=k; i<n; i++)
#define ll long long
const int inf = INT_MAX;

void solve()
{
    int n,a,b;
    cin>>n>>a>>b;
    if(a<=b)
    {
        if(b-a+1<5) cout<<"Tul konnyu!\n";
        else    cout<<b-a+1<<"\n";
    }
    else
    {
        if(n-a+b+1<5)   cout<<"Tul konnyu!\n";
        else    cout<<n-a+b+1<<"\n";
    }
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int t=1;
    //cin>>t;
    while(t--)  solve();
    return 0;
}