Submission #1310294

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

#define fo(i,s,t) for(int i = s; i <= t; ++ i)

int n, a, b;

int main()
{
	cin >> n >> a >> b;
	if(n == 1) return 0*printf("0");
	if(n == 2) return 0*printf("1");
	if(a > b) return 0*printf("0");
	if(a == b) return 0*printf("1");
	printf("%lld",(long long)(n-2)*b-(long long)(n-2)*a+1);
	return 0;
}

Submission Info

Judge Result