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Submission #805367

# Submission time Handle Problem Language Result Execution time Memory
805367 2023-08-03T15:51:41 Z vjudge1 Self Study (JOI22_ho_t2) C++17
0 / 100
 427 ms 5120 KB 
#include<bits/stdc++.h>

using namespace std;
using ll = long long;

const int N = 3e5 + 10;
ll n, m;
ll A[N], B[N];

ll divi(ll a, ll b) {
    return (a + b - 1) / b;
}

bool check(ll x) {
    ll s = 0;
    for(int i = 0; i < n; i++) {
        if(B[i] >= A[i]) {
            s += divi(x, B[i]);
        } else {
            ll t = min(m, divi(x, A[i]));
            s += t + divi(max(x - t * A[i], 0ll), B[i]);
        }
    }
    return (s <= n * m);
}
const ll INF = 1000000000000000000;
ll solve() {
    ll l = 0, r = INF;
    while(r - l > 1) {
        ll mid = (l + r) / 2;
        if(check(mid)) l = mid;
        else r = mid;
    }
    return l;
}

mt19937 rnd(14941);
uniform_int_distribution<ll> ui(1, INF);
void gen() {
    for(int i = 0; i < n; i++)  
        A[i] = rnd();
    for(int i = 0; i < n; i++)  
        B[i] = rnd();
}
ll stupid() {
    ll mx = (ll)1e18;
    for(int i = 0; i < n; i++)
        mx = min(mx, max(A[i], B[i]));
    return mx;
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin >> n >> m;
    for(int i = 0; i < n; i++) 
        cin >> A[i];
    for(int i = 0; i < n; i++) 
        cin >> B[i];
    cout << solve();
    // int t = 1000;
    // do {
    //     gen();
    //     t--;
    // }
    // while(stupid() == solve() && t);
    // for(int i = 0; i < n; i++) 
    //     cout << A[i] << ' ';
    // cout << '\n';
    // for(int i = 0; i < n; i++) 
    //     cout << B[i] << ' ';
    // cout << '\n';
    // cout << "slow: " << stupid() << '\n';
    // cout << "fast: " << solve() << '\n';
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 284 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 3 ms 340 KB Output is correct
11 Correct 189 ms 5000 KB Output is correct
12 Correct 197 ms 5120 KB Output is correct
13 Correct 131 ms 4972 KB Output is correct
14 Incorrect 427 ms 5004 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 71 ms 2668 KB Output is correct
10 Correct 48 ms 1884 KB Output is correct
11 Correct 36 ms 1492 KB Output is correct
12 Correct 29 ms 1280 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Incorrect 4 ms 340 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 284 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 3 ms 340 KB Output is correct
11 Correct 189 ms 5000 KB Output is correct
12 Correct 197 ms 5120 KB Output is correct
13 Correct 131 ms 4972 KB Output is correct
14 Incorrect 427 ms 5004 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 71 ms 2668 KB Output is correct
10 Correct 48 ms 1884 KB Output is correct
11 Correct 36 ms 1492 KB Output is correct
12 Correct 29 ms 1280 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Incorrect 4 ms 340 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 284 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 3 ms 340 KB Output is correct
11 Correct 189 ms 5000 KB Output is correct
12 Correct 197 ms 5120 KB Output is correct
13 Correct 131 ms 4972 KB Output is correct
14 Incorrect 427 ms 5004 KB Output isn't correct
15 Halted 0 ms 0 KB -