oj.uz

Submission #942853

# Submission time Handle Problem Language Result Execution time Memory
942853 2024-03-11T05:24:31 Z Pannda Nicelines (RMI20_nicelines) C++17
67.1431 / 100
 35 ms 2024 KB 
#include "nice_lines.h"

#include <bits/stdc++.h>
using namespace std;

void solve(int subtask_id, int n) {
    mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
    auto rand = [&](int l, int r) { return uniform_int_distribution<int>(l, r - 1)(rng); };
    const long double EPS = 1e-8;
    const int CL = -10000, CR = 10000;

    auto [a, b] = [&]() -> pair<vector<int>, vector<int>> {
        map<array<long long, 2>, long double> memorize;
        auto subquery = [&](long long x, long long y) {
            if (memorize.count({x, y})) return memorize[{x, y}];
            return memorize[{x, y}] = query(x, y);
        };
        auto f = [&](long long x, long long y) {
            return subquery(x, y + 1) - subquery(x, y);
        };
        vector<int> a, b;
        long long x = rand(20, 50);
        long long last = -5.1e5;
        for (int i = 0; i < n; i++) {
            long long l = last + 1, r = 5.1e5;
            while (l < r) {
                long long m = (l + r) >> 1;
                if (abs(f(x, m) - f(x, last)) > EPS) r = m;
                else l = m + 1;
            }
            long long y = l;
            long double d = abs(f(x, y) - f(x, last)) / 2;
            int _a = round(sqrt(1.0 / d / d - 1.0));
            int c = rand(1, 10);
            if (abs(f(x + c, y + c * _a) - f(x + c, y + c * _a - 1)) < EPS) _a *= -1;
            int _b = y - _a * x;
            a.push_back(_a);
            b.push_back(_b);
            last = y;
        }
        return make_pair(a, b);
    }();

    the_lines_are(a, b);
}

Compilation message

nicelines.cpp: In function 'void solve(int, int)':
nicelines.cpp:10:15: warning: unused variable 'CL' [-Wunused-variable]
   10 |     const int CL = -10000, CR = 10000;
      |               ^~
nicelines.cpp:10:28: warning: unused variable 'CR' [-Wunused-variable]
   10 |     const int CL = -10000, CR = 10000;
      |                            ^~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 436 KB Output is correct
2 Correct 1 ms 436 KB Output is correct
3 Correct 1 ms 444 KB Output is correct
4 Correct 1 ms 440 KB Output is correct

Subtask #2
0.0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 600 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #3
0.0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 440 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #4
14.2359449894 / 19.0

# Verdict Execution time Memory Grader output
1 Partially correct 34 ms 1484 KB Output is partially correct
2 Partially correct 35 ms 2024 KB Output is partially correct
3 Partially correct 32 ms 1080 KB Output is partially correct
4 Partially correct 33 ms 2024 KB Output is partially correct

Subtask #5
21.7184413409 / 23.0

# Verdict Execution time Memory Grader output
1 Partially correct 9 ms 1016 KB Output is partially correct
2 Partially correct 10 ms 756 KB Output is partially correct
3 Partially correct 11 ms 992 KB Output is partially correct
4 Partially correct 10 ms 1260 KB Output is partially correct

Subtask #6
20.1886747245 / 27.0

# Verdict Execution time Memory Grader output
1 Partially correct 34 ms 1484 KB Output is partially correct
2 Partially correct 35 ms 2024 KB Output is partially correct
3 Partially correct 32 ms 1080 KB Output is partially correct
4 Partially correct 33 ms 2024 KB Output is partially correct
5 Partially correct 9 ms 1016 KB Output is partially correct
6 Partially correct 10 ms 756 KB Output is partially correct
7 Partially correct 11 ms 992 KB Output is partially correct
8 Partially correct 10 ms 1260 KB Output is partially correct
9 Partially correct 35 ms 1504 KB Output is partially correct
10 Partially correct 33 ms 1468 KB Output is partially correct
11 Partially correct 32 ms 1512 KB Output is partially correct
12 Partially correct 32 ms 1504 KB Output is partially correct