oj.uz

Submission #942861

# Submission time Handle Problem Language Result Execution time Memory
942861 2024-03-11T05:26:55 Z Pannda Nicelines (RMI20_nicelines) C++17
73.3356 / 100
 41 ms 1888 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(50, 90);
        long long last = -1e6;
        for (int i = 0; i < n; i++) {
            long long l = last + 1, r = 1e6;
            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 440 KB Output is correct
2 Correct 1 ms 444 KB Output is correct
3 Correct 1 ms 440 KB Output is correct
4 Correct 1 ms 432 KB Output is correct

Subtask #2
0.0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 444 KB Incorrect
2 Halted 0 ms 0 KB -

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 696 KB Output is correct
2 Correct 1 ms 436 KB Output is correct
3 Correct 1 ms 436 KB Output is correct
4 Correct 1 ms 436 KB Output is correct

Subtask #4
13.9338612211 / 19.0

# Verdict Execution time Memory Grader output
1 Partially correct 41 ms 1232 KB Output is partially correct
2 Partially correct 39 ms 1888 KB Output is partially correct
3 Partially correct 32 ms 1460 KB Output is partially correct
4 Partially correct 40 ms 1228 KB Output is partially correct

Subtask #5
21.6127630753 / 23.0

# Verdict Execution time Memory Grader output
1 Partially correct 10 ms 1716 KB Output is partially correct
2 Partially correct 9 ms 1248 KB Output is partially correct
3 Partially correct 10 ms 952 KB Output is partially correct
4 Partially correct 9 ms 1192 KB Output is partially correct

Subtask #6
19.7889351939 / 27.0

# Verdict Execution time Memory Grader output
1 Partially correct 41 ms 1232 KB Output is partially correct
2 Partially correct 39 ms 1888 KB Output is partially correct
3 Partially correct 32 ms 1460 KB Output is partially correct
4 Partially correct 40 ms 1228 KB Output is partially correct
5 Partially correct 10 ms 1716 KB Output is partially correct
6 Partially correct 9 ms 1248 KB Output is partially correct
7 Partially correct 10 ms 952 KB Output is partially correct
8 Partially correct 9 ms 1192 KB Output is partially correct
9 Partially correct 37 ms 1460 KB Output is partially correct
10 Partially correct 35 ms 1792 KB Output is partially correct
11 Partially correct 41 ms 1468 KB Output is partially correct
12 Partially correct 31 ms 1264 KB Output is partially correct