oj.uz

Submission #743087

# Submission time Handle Problem Language Result Execution time Memory
743087 2023-05-17T07:49:39 Z Joo Lightning Rod (NOI18_lightningrod) C++17
100 / 100
 397 ms 79684 KB 
#include <bits/stdc++.h>
using namespace std;

bool isContain(pair<int, int> &a, pair<int, int> &b)
{
    return (abs(a.first - b.first) <= a.second - b.second);
}

inline void read(int &x)
{
    x = 0;
    char ch = getchar_unlocked();
    while (ch & 16)
    {
        x = (x << 3) + (x << 1) + (ch & 15);
        ch = getchar_unlocked();
    }
}

int main()
{
    cin.tie(0)->sync_with_stdio(0);
    int n;
    read(n);
    stack<pair<int, int>> st;
    for (int i = 1; i <= n; i++)
    {
        pair<int, int> tmp;
        int x, y;
        read(x), read(y);
        tmp = {x, y};
        while (!st.empty() and isContain(tmp, st.top()))
            st.pop();
        if (st.empty() or !isContain(st.top(), tmp))
            st.push(tmp);
    }
    cout << st.size() << "\n";
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 219 ms 79684 KB Output is correct
2 Correct 230 ms 79436 KB Output is correct
3 Correct 216 ms 77448 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 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 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 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 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 9 ms 212 KB Output is correct
15 Correct 8 ms 212 KB Output is correct
16 Correct 8 ms 980 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 234 ms 51324 KB Output is correct
2 Correct 218 ms 51328 KB Output is correct
3 Correct 217 ms 49940 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 219 ms 79684 KB Output is correct
2 Correct 230 ms 79436 KB Output is correct
3 Correct 216 ms 77448 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 9 ms 212 KB Output is correct
18 Correct 8 ms 212 KB Output is correct
19 Correct 8 ms 980 KB Output is correct
20 Correct 234 ms 51324 KB Output is correct
21 Correct 218 ms 51328 KB Output is correct
22 Correct 217 ms 49940 KB Output is correct
23 Correct 397 ms 212 KB Output is correct
24 Correct 326 ms 324 KB Output is correct
25 Correct 345 ms 10336 KB Output is correct