Submission #556975

#	Time	Username	Problem	Language	Result	Execution time	Memory
556975		1ne	Safety (NOI18_safety)	C++14	0 / 100	122 ms	14916 KiB

safety

#include<bits/stdc++.h>
using namespace std;

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	int n,k;cin>>n>>k;
	vector<long long>arr(n);
	for (int i = 0;i<n;++i)cin>>arr[i];
	multiset<long long,greater<long long>>maxxy;
	multiset<long long>minny;
	long long ans = 0,ans2 = 0;
	for (int i = 0;i<n;++i){
		if (!maxxy.empty()){
			auto x = *maxxy.begin();
			auto y = *minny.begin();
			if (abs(y - arr[i])>k){
				ans+=abs(y - arr[i]) - k;
				minny.erase(minny.begin());
				minny.insert(min(y + k,arr[i]));
				
			}	
		}
		maxxy.insert(arr[i]);
		minny.insert(arr[i]);
	}
	cout<<ans<<'\n';
	return 0;
}

Compilation message (stderr)

safety.cpp: In function 'int main()':
safety.cpp:15:9: warning: unused variable 'x' [-Wunused-variable]
   15 |    auto x = *maxxy.begin();
      |         ^
safety.cpp:12:20: warning: unused variable 'ans2' [-Wunused-variable]
   12 |  long long ans = 0,ans2 = 0;
      |                    ^~~~

• Subtask 1: 0 / 3
• Subtask 2: 0 / 4
• Subtask 3: 0 / 9
• Subtask 4: 0 / 5
• Subtask 5: 0 / 6
• Subtask 6: 0 / 11
• Subtask 7: 0 / 11
• Subtask 8: 0 / 22
• Subtask 9: 0 / 29