Submission #107429

#	Time	Username	Problem	Language	Result	Execution time	Memory
107429		evpipis	Stove (JOI18_stove)	C++14	100 / 100	40 ms	2420 KiB

stove

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

#define pb push_back

const int len = 1e5+5;
int arr[len];
vector<int> vec;

bool comp(int a, int b){
    return (a > b);
}

int main(){
    int n, k, ans;
    scanf("%d %d", &n, &k);
    for (int i = 1; i <= n; i++)
        scanf("%d", &arr[i]);
    k = min(k-1, n-1);

    for (int i = 1; i < n; i++)
        vec.pb(arr[i+1]-arr[i]-1);
    sort(vec.begin(), vec.end(), comp);

    ans = arr[n]-arr[1]+1;
    for (int i = 0; i < k; i++)
        ans -= vec[i];

    printf("%d\n", ans);
    return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &k);
     ~~~~~^~~~~~~~~~~~~~~~~
stove.cpp:18:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &arr[i]);
         ~~~~~^~~~~~~~~~~~~~~

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