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Submission #361712

# Submission time Handle Problem Language Result Execution time Memory
361712 2021-01-31T11:11:22 Z wildturtle Lightning Rod (NOI18_lightningrod) C++14
80 / 100
 2000 ms 89140 KB 
#include<bits/stdc++.h>
using namespace std;
int a,b,c,d,n,l;
stack < pair <int , int > > st;
int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++) {
        cin>>a>>b;
        l=0;
        while(!st.empty()) {
            c=st.top().first;
            d=st.top().second;
            if(a+b<=c+d) { l=1; break; }
            if(a-b<=c-d) st.pop();
            else break;
        }
        if(l==0) st.push({a,b});
    }
    cout<<st.size();
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1785 ms 80640 KB Output is correct
2 Correct 1853 ms 89140 KB Output is correct
3 Correct 1688 ms 79252 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 43 ms 2156 KB Output is correct
15 Correct 54 ms 2156 KB Output is correct
16 Correct 42 ms 2796 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1897 ms 51864 KB Output is correct
2 Correct 1802 ms 51752 KB Output is correct
3 Correct 1793 ms 50416 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1785 ms 80640 KB Output is correct
2 Correct 1853 ms 89140 KB Output is correct
3 Correct 1688 ms 79252 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 43 ms 2156 KB Output is correct
18 Correct 54 ms 2156 KB Output is correct
19 Correct 42 ms 2796 KB Output is correct
20 Correct 1897 ms 51864 KB Output is correct
21 Correct 1802 ms 51752 KB Output is correct
22 Correct 1793 ms 50416 KB Output is correct
23 Execution timed out 2080 ms 6168 KB Time limit exceeded
24 Halted 0 ms 0 KB -