Submission #203525

#	Time	Username	Problem	Language	Result	Execution time	Memory
203525		SoGood	Stove (JOI18_stove)	C++14	100 / 100	79 ms	2392 KiB

stove

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

using ll = long long;

#define int ll


const int N = 1e5 + 11;
int n, k, a[N];
main() {
    cin>>n>>k;
    for (int i=1;i<=n;++i) cin>>a[i];
    vector<int> v;
    for (int i = 2; i <= n; ++i) v.push_back(a[i]-a[i-1]-1);
    sort(v.begin(), v.end(),greater<int>());

    int ans=0;
    --k;
    for (int i = k; i < v.size(); ++i) ans+=v[i];
    cout<<ans+n;
    return 0;
}

Compilation message (stderr)

stove.cpp:11:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
stove.cpp: In function 'int main()':
stove.cpp:20:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = k; i < v.size(); ++i) ans+=v[i];
                     ~~^~~~~~~~~~

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