Envío 5506

Código

#include <bits/stdc++.h>
#define REP(i,n) for(int i=0; i<n;i++)
#define pb push_back
#define ff first
#define ss second
#define ii pair<int,int>
#define vi vector<int>
#define vii vector<ii>
#define lli long long int
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
using namespace std;
ostream& operator<<(ostream& os, const vector<int> &v){
    for(auto const &i: v){
        os<<i<<" ";
    }
    os<<endl;
    return os;
}
const lli mod=(1e9)+7;
const int N = 1e4+1;
int l,n,t;
bool check(int k){
    if(n%(l+k-t)==0)return true;
    else return false;
}
int main(){
    fast_io;
    cin>>n>>t>>l;
    cout<<(t>=l ? t-l : t-l+n)<<endl;
    return 0;
}