Submission #1792873

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Source Code Expand

#include <bits/stdc++.h>

#define int long long

using namespace std;

//int a[100001];

void no () {
	cout << 0;
	exit (0);
}

 main () {
	ios_base::sync_with_stdio (0);
	cin.tie (0);
	int n, a, b;	
	cin >> n >> a >> b;
	if (n == 1 && a != b) no ();
	if (a > b) no ();
	if (n == 1) {
		cout << 1;
		return 0;
	}
	int len = n - 2;
	int mn = a * len;
	int mx = b * len;
	cout << mx - mn + 1;
	return 0;
}

Submission Info

Judge Result