oj.uz

Submission #703767

# Submission time Handle Problem Language Result Execution time Memory
703767 2023-02-28T09:53:06 Z LittleCube Naan (JOI19_naan) C++14
29 / 100
 4000 ms 4788 KB 
#include <bits/stdc++.h>
#define int long long
#define ll long long
#define pii pair<int, int>
#define F first
#define S second
using namespace std;

const bool LittleCubeIsBurningChicken = true;

mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());

ll N, L, v[2005][4005], sum[4005];

int abtodc(int a, int b, int c)
{
    return (b * c + a - 1) / a;
}

vector<pii> sol;

pii solve(vector<int> p)
{
    sol.clear();
    pii last = {0, 1};
    int nxt = 1;
    for (auto i : p)
    {
        ll tmp = sum[i];
        while (tmp >= v[i][nxt] - abtodc(last.S, last.F, v[i][nxt]))
            tmp -= v[i][nxt] - abtodc(last.S, last.F, v[i][nxt]), last = {0, 1}, nxt++;
        last = {abtodc(last.S, last.F, v[i][nxt]), v[i][nxt]};
        last.F += tmp;
        sol.emplace_back(pii{last.F + last.S * (nxt - 1), last.S});
    }
    return sol.back();
}

signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    cin >> N >> L;
    // why divide by N?
    // how to solve using only fractions? -> we can discard leftovers (things cannot be converted to current fraction) from last person
    // is it guarnteed to always have a solution? -> yes (at least for N <= 6)
    // why?
    for (int i = 1; i <= N; i++)
    {
        for (int j = 1; j <= L; j++)
        {
            cin >> v[i][j];
            // sum >= sum of v / N
            // sum * N >= sum of v
            sum[i] += v[i][j];
            v[i][j] *= N;
        }
        for (int j = L + 1; j <= L + N; j++)
            v[i][L + 1] = 2'00000'000;
    }
    vector<int> p;
    for (int i = 1; i <= N; i++)
        p.emplace_back(i);
    solve(p);
    while (sol.back().F > sol.back().S * L)
    {
        pii cur = sol.back();
        for (int i = 0; i < N - 1; i++)
        {
            swap(p[i], p[i + 1]);
            solve(p);

            if (sol.back().F * cur.S < sol.back().S * cur.F)
                break;
            swap(p[i], p[i + 1]);
        }
    }
    sol.pop_back();
    for (auto [a, b] : sol)
        cout << a << ' ' << b << '\n';
    for (auto i : p)
        cout << i << ' ';
    cout << '\n';
}

Compilation message

naan.cpp: In function 'int main()':
naan.cpp:79:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   79 |     for (auto [a, b] : sol)
      |               ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #2
24.0 / 24.0

# 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 Correct 1 ms 348 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 1 ms 340 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct

Subtask #3
0 / 71.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 468 KB Output is correct
38 Correct 0 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Execution timed out 4051 ms 4788 KB Time limit exceeded
44 Halted 0 ms 0 KB -