oj.uz

Submission #576234

# Submission time Handle Problem Language Result Execution time Memory
576234 2022-06-12T16:43:21 Z Aldas25 Self Study (JOI22_ho_t2) C++14
0 / 100
 394 ms 6192 KB 
/*
//#pragma GCC target ("avx2")
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
*/

#include <bits/stdc++.h>

using namespace std;

#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(nullptr)
#define FOR(i, a, b) for(int i = (a); i <= (b); i++)
#define REP(n) FOR(O, 1, (n))
#define pb push_back
#define f first
#define s second
typedef long double ld;
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vii;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int MAXN = 500100, MAXK = 20;
const ll INF = 1e14;
//const ll MOD = 1e9+7;
const ll MOD = 998244353;

void setIO()
{
    FAST_IO;
}

void setIO(string s)
{
    FAST_IO;
    freopen((s+".in").c_str(), "r", stdin);
    freopen((s+".out").c_str(), "w", stdout);
}

int n, m;
ll a[MAXN], b[MAXN];

bool check (ll x) {
    ll needLessons = 0;
    FOR(i, 1, n) {
        ll w1 = (x + a[i] - 1) / a[i];
        ll w2 = (x-m*a[i] + b[i] - 1) / b[i];
        if (w1 < m) needLessons -= m-w1;
        else needLessons += w2;
    }
    return needLessons <= 0;
}

int main()
{
    setIO();

    cin >> n >> m;
    FOR(i, 1, n) cin >> a[i];
    FOR(i, 1, n) cin >> b[i];
    FOR(i, 1, n) a[i] = max(a[i], b[i]);

    ll le = 0, ri = 1e15;
    while (le < ri) {
        ll m = (le+ri+1)/2;
        if (check(m)) le = m;
        else ri = m-1;
    }

    cout << le << "\n";

    return 0;
}

Compilation message

Main.cpp: In function 'void setIO(std::string)':
Main.cpp:38:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |     freopen((s+".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:39:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |     freopen((s+".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Incorrect 1 ms 340 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 98 ms 5584 KB Output is correct
10 Correct 64 ms 3828 KB Output is correct
11 Correct 50 ms 2956 KB Output is correct
12 Correct 46 ms 2440 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 5 ms 340 KB Output is correct
19 Correct 5 ms 468 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Incorrect 394 ms 6192 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Incorrect 1 ms 340 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 98 ms 5584 KB Output is correct
10 Correct 64 ms 3828 KB Output is correct
11 Correct 50 ms 2956 KB Output is correct
12 Correct 46 ms 2440 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 5 ms 340 KB Output is correct
19 Correct 5 ms 468 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Incorrect 394 ms 6192 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Incorrect 1 ms 340 KB Output isn't correct
5 Halted 0 ms 0 KB -