Submission #879599

#	Time	Username	Problem	Language	Result	Execution time	Memory
879599		_KuroNeko_	Stove (JOI18_stove)	C++17	100 / 100	16 ms	2468 KiB

stove

#include<bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>
// using namespace __gnu_pbds;
// #define ordered_set tree<ll, null_type, less_equal<ll>, rb_tree_tag, tree_order_statistics_node_update>
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
using namespace std;
typedef long long ll;
typedef long double ldb;
typedef vector<int> vi;
typedef vector<long long> vl;
typedef vector<double> vdb;
typedef vector<vector<int>> vvi;
typedef vector<vector<ll>> vvl;
typedef vector<string> vs;
typedef set<int> si;
typedef set<long long> sl;
typedef set<double> sdb;
typedef set<string> ss;
typedef set<char> sc;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define ftb(i, a, b) for (int i = a, _b = b; i <= _b; ++i)
#define ft(i, a, b) for (int i = a, _b = b; i < _b; ++i)
#define fgb(i, a, b) for (int i = a, _b = b; i >= _b; --i)
#define fg(i, a, b) for (int i = a, _b = b; i > _b; --i)
#define endl "\n"
int main() {
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int n, k;
    cin >> n >> k;
    vi a(n);
    vi c;
    ft(i, 0, n) {
        cin >> a[i];
    }
    ft(i, 1, n) {
        c.push_back(a[i] - a[i - 1] - 1);
    }
    sort(c.rbegin(), c.rend());
    ll ans = a.back() - a[0] + 1;
    ft(i, 0, k - 1) {
        ans -= c[i];
    }
    cout << ans << endl;
}

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