Submission #1478553

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Source Code Expand

#include<bits/stdc++.h>
#define range(i,a,b) for(int i = (a); i < (b); i++)
#define rep(i,b) for(int i = 0; i < (b); i++)
#define all(a) (a).begin(), (a).end()
#define show(x)  cerr << #x << " = " << (x) << endl;
using namespace std;

int main(){
    long long n, a, b;
    cin >> n >> a >> b;
    if(a == b){
        cout << 1 << endl;
        return 0;
    }
    long long ans = (a + b * n) - (a * n + b) - 1;
    cout << (ans < 0 ? 0 : ans) << endl;
}

Submission Info

Judge Result