Submission #1441547

---

Source Code Expand

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <sstream>
#define loop(i,n) for(int i = 0; i < n; i++)
#define FOR(x,y,z) for(int x = y; x < z; x++)
#define INF 999999999;
#define VEC vector<int>
#define in push_back
#define ans(x) cout<<x<<endl
#define ll long long

using namespace std;

int main()
{
	int a, b;
	cin >> a >> b ;
	ans(min(a-b,b-1));
	return 0;
}

Submission Info

Judge Result