Submission #982327

#	Time	Username	Problem	Language	Result	Execution time	Memory
982327		Amirreza_Fakhri	Stove (JOI18_stove)	C++17	100 / 100	36 ms	6736 KiB

stove

// In the name of the God
#include <bits/stdc++.h>
#define ll long long
// #define int long long
#define pb push_back
#define F first
#define S second
#define mp make_pair
#define pii pair <int, int>
#define smin(x, y) (x) = min((x), (y))
#define smax(x, y) (x) = max((x), (y))
#define all(x) (x).begin(), (x).end()
using namespace std;

// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2")

const int inf = 1e9+7;
const int mod = 998244353;
const int maxn = 1e5+5;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int n, k, t[maxn];
multiset <int, greater <int> > st;

int32_t main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n >> k;
    for (int i = 0; i < n; i++) {
        cin >> t[i];
        if (i) st.insert(-t[i]+t[i-1]);
    }
    int ans = k-t[0]+t[n-1];
    while (st.size() >= k) st.erase(st.begin());
    for (auto it = st.begin(); it != st.end(); it++) ans += *it;
    cout << ans << '\n';
    return 0;
}





/*
srand(time(0));
cout << (rand()%1900) + 1 << ' ' << (rand()%2)+5 << '\n';
*/

Compilation message (stderr)

stove.cpp: In function 'int32_t main()':
stove.cpp:35:22: warning: comparison of integer expressions of different signedness: 'std::multiset<int, std::greater<int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   35 |     while (st.size() >= k) st.erase(st.begin());
      |            ~~~~~~~~~~^~~~

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