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Submission #1094461

# Submission time Handle Problem Language Result Execution time Memory
1094461 2024-09-29T16:29:44 Z stefanopulos Self Study (JOI22_ho_t2) C++17
0 / 100
 128 ms 5204 KB 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <bits/stdc++.h>
 
using namespace std;
using namespace __gnu_pbds;
 
typedef long long ll;
typedef long double ldb;
 
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<ldb,ldb> pdd;

#define ff(i,a,b) for(int i = a; i <= b; i++)
#define fb(i,b,a) for(int i = b; i >= a; i--)
#define trav(a,x) for(auto& a : x)
 
#define sz(a) (int)(a).size()
#define fi first
#define se second
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

// os.order_of_key(k) the number of elements in the os less than k
// *os.find_by_order(k)  print the k-th smallest number in os(0-based)

const int mod = 1000000007;
const ll inf = 3e18 + 5;
const int mxN = 300005; 

int n, m;
ll A[mxN];
ll B[mxN];

bool check(ll X){

    ll uk = 0;
    ff(i,1,n){
        if(A[i] > B[i]){
            ll a = min((ll)m, (X + A[i] - 1) / A[i]);
            
            ll Y = max(0ll, X - 1ll * a * A[i]);
            ll b = (Y + B[i] - 1) / B[i];

            uk += a + b;

        }
        else{
            ll b = (X + B[i] - 1) / B[i];
            uk += b;
        }
    }

    return uk <= 1ll * n * m;

}

int main(){
    cin.tie(0)->sync_with_stdio(0);

    cin >> n >> m;
    ff(i,1,n)cin >> A[i];
    ff(i,1,n)cin >> B[i];

    ll l = 1, r = inf, ans = 0;
    while(l <= r){
        ll mid = l + (r - l) / 2;
        if(check(mid)){
            ans = mid;
            l = mid + 1;
        }
        else r = mid - 1;
    }

    cout << ans << '\n';

    return 0;
}
/*

3 3
19 4 5
2 6 2

2 1
9 7
2 6

5 60000
630510219 369411957 874325200 990002527 567203997
438920902 634940661 593780254 315929832 420627496

4 25
1 2 3 4
1 2 3 4

// probati bojenje sahovski
*/

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 2 ms 348 KB Output is correct
11 Correct 122 ms 5132 KB Output is correct
12 Correct 128 ms 5204 KB Output is correct
13 Correct 72 ms 5080 KB Output is correct
14 Incorrect 127 ms 4948 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 43 ms 3676 KB Output is correct
10 Correct 27 ms 3164 KB Output is correct
11 Correct 21 ms 2908 KB Output is correct
12 Correct 16 ms 1416 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Incorrect 2 ms 348 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 2 ms 348 KB Output is correct
11 Correct 122 ms 5132 KB Output is correct
12 Correct 128 ms 5204 KB Output is correct
13 Correct 72 ms 5080 KB Output is correct
14 Incorrect 127 ms 4948 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 43 ms 3676 KB Output is correct
10 Correct 27 ms 3164 KB Output is correct
11 Correct 21 ms 2908 KB Output is correct
12 Correct 16 ms 1416 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Incorrect 2 ms 348 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 2 ms 348 KB Output is correct
11 Correct 122 ms 5132 KB Output is correct
12 Correct 128 ms 5204 KB Output is correct
13 Correct 72 ms 5080 KB Output is correct
14 Incorrect 127 ms 4948 KB Output isn't correct
15 Halted 0 ms 0 KB -