Submission #1182690

#	Time	Username	Problem	Language	Result	Execution time	Memory
1182690		nagornz	Self Study (JOI22_ho_t2)	C++20	100 / 100	131 ms	5136 KiB

Main

#include <bits/stdc++.h>
#define int unsigned long long
#define double long double
#define pii pair <int,int>
#define tiii tuple <int, int, int>
#define f first
#define s second
#define all(x) x.begin(), x.end()
#define ub(a, b) upper_bound(a.begin(), a.end(), b) - a.begin()
#define lb(a, b) lower_bound(a.begin(), a.end(), b) - a.begin()
#define ve vector
#define graph(a, n) vector <int> a[n];
#define wgraph(a, n) vector <pii> a[n];
#define emb emplace_back
#define em emplace
#define ins insert
#define er erase
#define iShowSpeed cin.tie(NULL)->sync_with_stdio(false)

using namespace std;

template <typename T>
using greater_priority_queue = priority_queue<T, vector<T>, greater<T>>;

const int mod = 1e9 + 7;
const int inf = 1e19;
const int N = 3e5 + 5;

int n, m, a[N], b[N];

int cal(int mid){
    int use = 0;
    for (int i = 1; i <= n; i++) {
        if (a[i] > b[i]) {
            if ((mid + a[i] - 1) / a[i] > m) {
                use += m;
                int need = mid - m * a[i];
                use += (need + b[i] - 1) / b[i];
            }
            else use += (mid + a[i] - 1) / a[i];
        }
        else use += (mid + b[i] - 1) / b[i];
    }
    return use;
}

int32_t main(){
    iShowSpeed;
    cin >> n >> m;
    for (int i = 1; i <= n; i++) cin >> a[i];
    for (int i = 1; i <= n; i++) cin >> b[i];
    int l = 0, r = inf, ans = 0;
    while (l <= r) {
        int mid = (l + r) / 2;
        if (cal(mid) > n * m) {
            r = mid - 1;
        }
        else {
            ans = mid;
            l = mid + 1;
        }
    }
    cout << ans;
}

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