Submission #159869

#	Time	Username	Problem	Language	Result	Execution time	Memory
159869		dantoh000	Stove (JOI18_stove)	C++14	100 / 100	26 ms	760 KiB

stove

#include <bits/stdc++.h>
using namespace std;
int main(){
    int n,k;
    scanf("%d%d",&n,&k);
    n--;
    int last;
    int x;
    scanf("%d",&last);
    int a[n];
    int ans = k;
    for (int i = 0; i < n; i++) {
        scanf("%d",&x);
        a[i] = x-last;
        ans += a[i];
        last = x;
    }
    sort(a,a+n,greater<int>());
    for (int i = 0; i < k-1; i++){
        ans -= a[i];
    }
    printf("%d",ans);


}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:5:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&k);
     ~~~~~^~~~~~~~~~~~~~
stove.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&last);
     ~~~~~^~~~~~~~~~~~
stove.cpp:13:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&x);
         ~~~~~^~~~~~~~~

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