Submission #11638828

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Source Code Expand

#include <bits/stdc++.h>

#define rep(i, n) for (ll i=0;i<(n); i++)
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
#define ALL(x) (x).begin(),(x).end()
#define Sort(a) sort(ALL(a))
#define Rev(a) reverse(ALL(a))


using namespace std;
//using ll=long long;
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pi;
const long double PI=3.14159265358979323846;


template<class T> bool contain(const std::string& s, const T& v) {
   return s.find(v) != std::string::npos;
}


int main(){

  ll n,a,b;
  cin>>n>>a>>b;

  ll ans=0;
  if(a<=b && n>1){
    ans = (n-2)*(b-a)+1;
  }
  if(n==1 && a==b) ans =1;

  cout<<ans<<endl;
}

Submission Info

Judge Result