Submission #766711

#	Time	Username	Problem	Language	Result	Execution time	Memory
766711		raysh07	Self Study (JOI22_ho_t2)	C++17	0 / 100	502 ms	5020 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF (int)1e18
#define f first
#define s second

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

void Solve() 
{
    int n, m; cin >> n >> m;
    vector <int> a(n), b(n);
    for (auto &x : a) cin >> x;
    for (auto &x : b) cin >> x;
    
    int l = 0, r = INF;
    while (r != l){
        int mid = (l + r + 1) / 2;
        
        int use = 0, need = 0;
        for (int i = 0; i < n; i++){
            if (a[i] < b[i]) {
                need += (mid + b[i] - 1) / b[i];
                continue;
            }
            
            int o = (mid + a[i] - 1) / a[i];
            int o1 = 0;
            
            if (o > m){
                o = m;
                int ex = mid - a[i] * o;
                o1 = (ex + b[i] - 1) / b[i];
            }
            
            int ex = a[i] * o + b[i] * o1 - mid;
            int sw = ex / (a[i] - b[i]);
            assert(sw >= 0);
            
            if (sw > o) sw = o;
            
            o -= sw;
            o1 += sw;
            use += o;
            need += o1;
        }
        
        if (use + need > n * m) r = mid - 1;
        else l = mid;
    }
    
    cout << l << "\n";
}

int32_t main() 
{
    auto begin = std::chrono::high_resolution_clock::now();
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t = 1;
  //  cin >> t;
    for(int i = 1; i <= t; i++) 
    {
        //cout << "Case #" << i << ": ";
        Solve();
    }
    auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
    return 0;
}

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