Stand on Zanzibar

#include <bits/stdc++.h>

using namespace std;

void solve(){
	string s; getline(cin, s);
	stringstream lol(s);
	int64_t in, la = 0;
	int64_t ans = 0;
	lol >> la;
	while(lol >> in){
		if(in > la*2)
			ans+=in-la*2;
		la = in;
	}
	cout << ans <<"\n";
}
int main(){
	int tests; cin >> tests;
	string tmp;
	getline(cin, tmp);
	while(tests--)
		solve();
}

Test 1

Verdict: ACCEPTED