Submission #526827

#	Time	Username	Problem	Language	Result	Execution time	Memory
526827		abc864197532	Self Study (JOI22_ho_t2)	C++17	100 / 100	323 ms	7224 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define pb push_back
#define eb emplace_back
#define pii pair<int,int>
#define X first
#define Y second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
void abc() {cout << endl;}
template <typename T, typename ...U> void abc(T i, U ...j) {
	cout << i << ' ', abc(j...);
}
template <typename T> void printv(T l, T r) {
	for (; l != r; ++l) cout << *l << " \n"[l + 1 == r];
}
#ifdef Doludu
#define test(x...) abc("[" + string(#x) + "]", x)
#define owo freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#else
#define test(x...) void(0)
#define owo ios::sync_with_stdio(false), cin.tie(0);
#endif
const int N = 200000;

int main () {
	owo;
	int n, m;
	cin >> n >> m;
	vector <int> a(n), b(n);
	for (int i = 0; i < n; ++i)
		cin >> a[i];
	for (int i = 0; i < n; ++i)
		cin >> b[i], a[i] = max(a[i], b[i]);
	auto ask = [&](lli bound) {
		lli rem = 0;
		for (int i = 0; i < n; ++i) {
			lli need = (bound + a[i] - 1) / a[i];
			if (need <= m)
				rem += m - need;
			else
				rem -= (bound - 1ll * a[i] * m + b[i] - 1) / b[i];
			if (rem + 1ll * m * n < 0)
				return false;
		}
		return rem >= 0;
	};
	lli l = 0, r = 1ll << 60;
	while (r - l > 1) {
		(ask(l + r >> 1) ? l : r) = l + r >> 1;
	}
	cout << l << endl;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:51:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   51 |   (ask(l + r >> 1) ? l : r) = l + r >> 1;
      |        ~~^~~
Main.cpp:51:33: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   51 |   (ask(l + r >> 1) ? l : r) = l + r >> 1;
      |                               ~~^~~

• Subtask 1: 10 / 10
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 29 / 29
• Subtask 5: 9 / 9