Submission #1246904

#	Time	Username	Problem	Language	Result	Execution time	Memory
1246904		sameer	Stove (JOI18_stove)	C++17	100 / 100	13 ms	1096 KiB

stove

#include <bits/stdc++.h>
using namespace std;
using ll = long long int;
ll i, j, n, k, a[100001], ans;

bool cmp(ll x, ll y){
 return x > y;
}

void run(){
 cin >> n >> k;
 for( i = 0; i < n; i++) cin >> a[i];
 ans = 1+a[n-1]-a[0];
 for( i = 0; i < n-1; i++) a[i] = a[i+1]-a[i]-1;
 sort(a, a+n-1, cmp);
 for( i = 0; i < k-1; i++) ans -= a[i];
 cout << ans << '\n';
}

int main(){
 ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
 // int tt; cin >> tt; while(tt--)
 run();
}

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