Submission #315647

#	Time	Username	Problem	Language	Result	Execution time	Memory
315647		nandonathaniel	Stove (JOI18_stove)	C++14	100 / 100	22 ms	1920 KiB

stove

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

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int n,k,prv,first,a;
	vector<int> v;
	cin >> n >> k;
	for(int i=1;i<=n;i++){
		cin >> a;
		if(i==1)first=a;
		if(i>1)v.push_back(a-prv-1);
		prv=a;
	}
	int ans=prv-first+1;
	//take k-1 maximum number
	sort(v.begin(),v.end());
	reverse(v.begin(),v.end());
	for(int i=0;i<k-1;i++)ans-=v[i];
	cout << ans << '\n';
	return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:15:13: warning: 'first' may be used uninitialized in this function [-Wmaybe-uninitialized]
   15 |  int ans=prv-first+1;
      |          ~~~^~~~~~
stove.cpp:15:13: warning: 'prv' may be used uninitialized in this function [-Wmaybe-uninitialized]

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50