Submission #3215457

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Source Code Expand

#include <bits/stdc++.h>
typedef long long ll;
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,a) FOR(i,0,a)
	
using namespace std;
const int MAX_N=2e5;
int N;
ll T;
int main(){
	cin>>N>>T;
	ll pret=0,ans=0;
	REP(i,N){
		ll t;
		cin>>t;
		if (t<pret){
			ans+=t+T-pret;
		}else{
			ans+=T;
		}
		pret=t+T;
	}
	cout<<ans<<endl;
	return 0;
}

Submission Info

Judge Result