Submission #1310287

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Source Code Expand

/***********************************************
#
#      Filename: a.cpp
#
#        Author: Comsyl - ylsong15@fudan.edu.cn
#   Description: ---
#        Create: 2017-05-27 20:02:58
***********************************************/
#include <iostream>
using namespace std;
int N, A, B;

long long solve() {
    if (A == B) return 1L;
    if (A > B) return 0L;
    if (N == 1) {
        return 0;
    } else {
        long long min_v = (N - 1) * 1LL * A + B * 1LL;
        long long max_v = (N - 1) * 1LL * B + A * 1LL;
        return max_v - min_v + 1;
    }
}

int main()
{
    cin >> N >> A >> B;
    long long ans = solve();
    cout << ans << endl;
    return 0;
}

Submission Info

Judge Result