oj.uz

Submission #743141

# Submission time Handle Problem Language Result Execution time Memory
743141 2023-05-17T08:19:46 Z vjudge1 Lightning Rod (NOI18_lightningrod) C++17
40 / 100
 2000 ms 192392 KB 
#include <bits/stdc++.h>
using namespace std;
vector<pair<int, int>> v;

bool sorted(const pair<int, int> &a, const pair<int, int> &b)
{
    if (a.second == b.second)
        return a.first > b.first;
    return a.second > b.second;
}

bool check(int x1, int x2, int y1, int y2)
{
    return abs(x1 - x2) <= y1 - y2;
}

int main()
{
    // bf
    map<int, int> ma;
    map<int, int> poled;
    int n, a, b;
    cin >> n;
    for (int i = 1; i <= n; ++i)
    {
        cin >> a >> b;
        v.push_back({a, b});
        ma[i - 1] = -1;
        poled[i - 1] = 0;
    }
    sort(v.begin(), v.end(), sorted);
    for (int i = 0; i < v.size(); ++i)
    {
        for (int j = 0; j < v.size(); ++j)
        {
            if (i != j && check(v[i].first, v[j].first, v[i].second, v[j].second))
            {
                ma[j] = i;
            }
        }
    }
    long long sum = 0;
    for (auto it = ma.begin(); it != ma.end(); ++it)
    {
        if (it->second == -1)
        {
            sum++;
            poled[it->first] = 1;
        }
        else
        {
            poled[it->first] = 1;
        }
    }
    cout << sum;
}

Compilation message

lightningrod.cpp: In function 'int main()':
lightningrod.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for (int i = 0; i < v.size(); ++i)
      |                     ~~^~~~~~~~~~
lightningrod.cpp:34:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         for (int j = 0; j < v.size(); ++j)
      |                         ~~^~~~~~~~~~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2092 ms 192056 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 256 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 65 ms 468 KB Output is correct
12 Correct 17 ms 520 KB Output is correct
13 Correct 16 ms 468 KB Output is correct

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 65 ms 468 KB Output is correct
12 Correct 17 ms 520 KB Output is correct
13 Correct 16 ms 468 KB Output is correct
14 Execution timed out 2029 ms 20816 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2045 ms 192392 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2092 ms 192056 KB Time limit exceeded
2 Halted 0 ms 0 KB -