Submission #49012

#	Time	Username	Problem	Language	Result	Execution time	Memory
49012		WLZ	Stove (JOI18_stove)	C++17	100 / 100	48 ms	10692 KiB

stove

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

typedef pair<int, int> ii;
typedef long long ll;
const int INF = 1e9;
const int MAXN = 1e5 + 5;
const ll LINF = 1e18;
const double pi = acos(-1);
const double EPS = 1e-9;
template <class T> using MinPQ = priority_queue<T, vector<T>, greater<T>>;
template <class T> using MaxPQ = priority_queue<T>;



int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    int n, k;
    scanf("%d %d", &n, &k);
    vector<int> a(n);
    for (int i = 0; i < n; i++) scanf("%d", &a[i]);
    int ans = n;
    MinPQ<int> pq;
    for (int i = 1; i < n; i++) pq.push(a[i] - a[i - 1] - 1);
    for (int i = 0; i < n - k; i++) {
        ans += pq.top();
        pq.pop();
    }
    printf("%d\n", ans);
    return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:19:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &k);
     ~~~~~^~~~~~~~~~~~~~~~~
stove.cpp:21:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (int i = 0; i < n; i++) scanf("%d", &a[i]);
                                 ~~~~~^~~~~~~~~~~~~

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