Submission #644366

#	Time	Username	Problem	Language	Result	Execution time	Memory
644366		vladislav11	Stove (JOI18_stove)	C++14	100 / 100	20 ms	2072 KiB

stove

#include <bits/stdc++.h>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    int n, k;
    cin >> n >> k;
    k--;
    
    if ( n == 1 )
    {
        cout << 1;
        return 0;
    }
    
    vector<int> t(n);
    
    for ( auto& el : t )
        cin >> el;
    
    vector<int> a(n-1);
    
    for ( int i=0; i<a.size(); i++ )
        a[i] = t[i+1] - t[i] - 1;
    
    sort( a.begin(), a.end(), greater<int>() );
    
    int ans = t.back() - t[0] + 1;
    
    for ( int i=0; i<a.size() && i<k; i++ )
        ans -= a[i];
    
    cout << ans;
    
    return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:27:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for ( int i=0; i<a.size(); i++ )
      |                    ~^~~~~~~~~
stove.cpp:34:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for ( int i=0; i<a.size() && i<k; i++ )
      |                    ~^~~~~~~~~

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