Submission #1309657

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;

#define pb push_back
#define mp make_pair
#define forn(i, n) for (int i = 0; i < (int)(n); ++i)
typedef long long LL;
typedef pair<int, int> PII;

int n, a, b;

int main() {
    cin >> n >> a >> b;
    if (a > b) {
        cout << 0 << endl;
        return 0;
    }
    if (n == 1) {
        if (a == b) cout << 1 << endl;
        else cout << 0 << endl;
        return 0;
    }
    LL from = (LL)a * (n - 1) + b;
    LL to = a + (LL)b * (n - 1);
    cout << to - from + 1 << endl;
    return 0;
}

Submission Info

Judge Result