Submission #1123523

#	Time	Username	Problem	Language	Result	Execution time	Memory
1123523		LucaIlie	Self Study (JOI22_ho_t2)	C++20	0 / 100	395 ms	2764 KiB

Main

#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 3e5;
int a[MAX_N], b[MAX_N];

int main() {
    int n, m;

    cin >> n >> m;
    for ( int i = 0; i < n; i++ )
        cin >> a[i];
    for ( int i = 0; i < n; i++ )
        cin >> b[i];

    long long l = 0, r = 1.5e18;
    while ( r - l > 1 ) {
        long long mid = (l + r) / 2;

        long long freeClasses = (long long)n * m, busyClasses = 0;
        for ( int i = 0; i < n; i++ ) {
            if ( a[i] > b[i] ) {
                if ( (long long)a[i] * m >= mid )
                    freeClasses -= (mid + a[i] - 1) / a[i];
                else {
                    freeClasses -= m;
                    busyClasses += (mid - (long long)m * a[i] + b[i] - 1) / b[i];
                }
            } else
                busyClasses += (mid + b[i] - 1) / b[i];
        }

        if ( freeClasses >= busyClasses )
            l = mid;
        else
            r = mid;
    }

    cout << l << "\n";
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 9