int n,l,r; cin>>n>>l>>r; int x=l/n*n; l-=x; r-=x; if(r<n-1) { cout<<r; }else { cout<<n-1; } return 0;

``````cpp
#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a,b,c;
    cin>>a>>b>>c;
    if(c%a>=c-b) cout<<c%a;
    else  cout<<a-1;
}