oj.uz

Submission #917994

# Submission time Handle Problem Language Result Execution time Memory
917994 2024-01-29T10:32:46 Z vjudge1 Stove (JOI18_stove) C++17
0 / 100
 1 ms 348 KB 
#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// using namespace __gnu_pbds;
using namespace std;
//-----------------------
// #define   ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define            ll long long
#define           ull unsigned long long
#define            pb push_back
#define            pf push_front
#define            mp make_pair
#define      mem(f,x) memset(f, x, sizeof(f))
#define   __lcm(a, b) (1ll * a * b) / __gcd(a, b)
#define  bit(mask, i) ((mask >> i) & 1)
#define           pii pair<int, int>
#define           pll pair<ll, ll>
#define            el '\n'
#define             F first
#define             S second
#define         io(x) freopen(x".inp","r",stdin),freopen(x".out","w",stdout)
//-----------------------
const ll INF = 1e18;
const int MOD = 1e9 + 7;
const int MULTI = 0;
const int dx[4] = {0, 0, 1, -1}; //R L D U
const int dy[4] = {1, -1, 0, 0};
//-----AUTHOR trvhung VNG High School for Gifted Student-----

const int maxn = 1e5 + 5;
int n, k, a[maxn];

int check(int x) {
	int remain = k, i = 0, ret = 0;
	while (remain > 0) {
		remain--; int cur = 1; i++;
		while (i < n && cur + a[i + 1] - a[i] <= x) {
			cur += a[i + 1] - a[i];
			i++;
		}
		ret += cur;
		if (i == n) return ret;
	}
	return -1;
}

void solve() {
	cin >> n >> k;
	for (int i = 1; i <= n; ++i)
		cin >> a[i];

	int l = 1, r = 1e9, ans = 0;
	while (l <= r) {
		int mid = l + r >> 1;
		if (check(mid) != -1) {
			ans = check(mid);
			r = mid - 1;
		} else l = mid + 1;
	}

	cout << ans;
}

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    if (!MULTI) solve();
    else {
        int test; cin >> test;
        while (test--) solve();
    }
    
    return 0;
}

Compilation message

stove.cpp: In function 'void solve()':
stove.cpp:53:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   53 |   int mid = l + r >> 1;
      |             ~~^~~

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -