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Submission #363594

# Submission time Handle Problem Language Result Execution time Memory
363594 2021-02-06T16:38:45 Z keta_tsimakuridze Lightning Rod (NOI18_lightningrod) C++14
80 / 100
 2000 ms 157328 KB 
#include<bits/stdc++.h>
#define f first
#define s second
using namespace std;
const int N=1e7+5;
int t,x,y,n;
stack<pair<int,int> > s; 
 main(){
 	ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
		cin>>n;
		for(int i=1;i<=n;i++){
			cin>>x>>y;
			int a1=x-y;
			while(s.size() && s.top().f>=a1) s.pop();
			int a2=x+y;
			if(s.size()==0 || s.top().s<a2) s.push({a1,a2});
		}
		cout<<s.size();
}

Compilation message

lightningrod.cpp:8:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    8 |  main(){
      |       ^

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1669 ms 79936 KB Output is correct
2 Correct 1714 ms 79504 KB Output is correct
3 Correct 1642 ms 77536 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 384 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 384 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 384 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 46 ms 492 KB Output is correct
15 Correct 43 ms 364 KB Output is correct
16 Correct 39 ms 1132 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1816 ms 51440 KB Output is correct
2 Correct 1821 ms 51532 KB Output is correct
3 Correct 1748 ms 50304 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1669 ms 79936 KB Output is correct
2 Correct 1714 ms 79504 KB Output is correct
3 Correct 1642 ms 77536 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 384 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 46 ms 492 KB Output is correct
18 Correct 43 ms 364 KB Output is correct
19 Correct 39 ms 1132 KB Output is correct
20 Correct 1816 ms 51440 KB Output is correct
21 Correct 1821 ms 51532 KB Output is correct
22 Correct 1748 ms 50304 KB Output is correct
23 Correct 1983 ms 5648 KB Output is correct
24 Execution timed out 2041 ms 157328 KB Time limit exceeded
25 Halted 0 ms 0 KB -