Submission #315647

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
315647	2020-10-23T14:24:18 Z	nandonathaniel	Stove (JOI18_stove)	C++14	100 / 100	22 ms	1920 KB

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

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

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct

Subtask #2

30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	1 ms	436 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct

Subtask #3

50.0 / 50.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	1 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	1 ms	436 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	20 ms	1920 KB	Output is correct
17	Correct	20 ms	1920 KB	Output is correct
18	Correct	22 ms	1920 KB	Output is correct
19	Correct	22 ms	1920 KB	Output is correct
20	Correct	21 ms	1920 KB	Output is correct
21	Correct	21 ms	1920 KB	Output is correct
22	Correct	21 ms	1920 KB	Output is correct
23	Correct	20 ms	1920 KB	Output is correct
24	Correct	20 ms	1920 KB	Output is correct