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Submission #1013658

# Submission time Handle Problem Language Result Execution time Memory
1013658 2024-07-03T18:42:31 Z Uniq0rn Lightning Rod (NOI18_lightningrod) C++14
100 / 100
 1127 ms 192756 KB 
#include <bits/stdc++.h>
using namespace std;

#define ull unsigned long long
#define ll long long int
#define pi pair<int,int>
#define sz(x) (int)x.size()
#define all(x) begin(x),end(x)

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n;cin >> n;
    stack<pair<int,int>> st;
    for(int i=0;i<n;i++){
        int a,b;cin >> a >> b;
        while(sz(st) && st.top().first >= a-b && st.top().second <= a+b){
            st.pop();
        }
        if(!sz(st) || a-b < st.top().first || a+b > st.top().second){
            st.push({a-b,a+b});
        }
    }
    cout << sz(st);
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 984 ms 192756 KB Output is correct
2 Correct 1010 ms 191976 KB Output is correct
3 Correct 954 ms 186476 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 31 ms 4160 KB Output is correct
15 Correct 30 ms 3668 KB Output is correct
16 Correct 23 ms 3676 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 936 ms 147796 KB Output is correct
2 Correct 915 ms 147740 KB Output is correct
3 Correct 943 ms 144064 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 984 ms 192756 KB Output is correct
2 Correct 1010 ms 191976 KB Output is correct
3 Correct 954 ms 186476 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 31 ms 4160 KB Output is correct
18 Correct 30 ms 3668 KB Output is correct
19 Correct 23 ms 3676 KB Output is correct
20 Correct 936 ms 147796 KB Output is correct
21 Correct 915 ms 147740 KB Output is correct
22 Correct 943 ms 144064 KB Output is correct
23 Correct 1127 ms 175640 KB Output is correct
24 Correct 1111 ms 157000 KB Output is correct
25 Correct 1043 ms 140232 KB Output is correct