#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define MAXN (1000005)
int main() {
ios_base::sync_with_stdio(false);cin.tie(0);
ll N;
cin>>N;
pair<ll,ll> arr[N];
for(ll i = 0;i < N;i++){
cin>>arr[i].first>>arr[i].second;
}
sort(arr,arr + N);
stack<pair<ll,ll> > st;
for(ll i = 0;i < N;i++){
while(!st.empty() && abs(arr[i].first - st.top().first) <= arr[i].second - st.top().second){
st.pop();
}
if(st.empty() || (abs(arr[i].first - st.top().first) > arr[i].second - st.top().second && abs(st.top().first - arr[i].first) > st.top().second - arr[i].second)){
st.push(arr[i]);
}
}
cout<<st.size()<<'\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
30 ms |
6668 KB |
Output is correct |
| 3 |
Correct |
42 ms |
7764 KB |
Output is correct |
| 4 |
Correct |
102 ms |
16620 KB |
Output is correct |
| 5 |
Correct |
62 ms |
11860 KB |
Output is correct |
| 6 |
Correct |
121 ms |
24800 KB |
Output is correct |
| 7 |
Correct |
124 ms |
21292 KB |
Output is correct |
| 8 |
Correct |
113 ms |
18000 KB |
Output is correct |
| 9 |
Correct |
88 ms |
18004 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 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 |
1 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 |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
344 KB |
Output is correct |
| 14 |
Correct |
1 ms |
452 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 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 |
1 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 |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
344 KB |
Output is correct |
| 14 |
Correct |
1 ms |
452 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
0 ms |
348 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
348 KB |
Output is correct |
| 20 |
Correct |
1 ms |
348 KB |
Output is correct |
| 21 |
Correct |
1 ms |
348 KB |
Output is correct |
| 22 |
Correct |
1 ms |
344 KB |
Output is correct |
| 23 |
Correct |
1 ms |
348 KB |
Output is correct |
| 24 |
Correct |
1 ms |
472 KB |
Output is correct |
| 25 |
Correct |
1 ms |
600 KB |
Output is correct |
| 26 |
Correct |
1 ms |
348 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
30 ms |
6668 KB |
Output is correct |
| 3 |
Correct |
42 ms |
7764 KB |
Output is correct |
| 4 |
Correct |
102 ms |
16620 KB |
Output is correct |
| 5 |
Correct |
62 ms |
11860 KB |
Output is correct |
| 6 |
Correct |
121 ms |
24800 KB |
Output is correct |
| 7 |
Correct |
124 ms |
21292 KB |
Output is correct |
| 8 |
Correct |
113 ms |
18000 KB |
Output is correct |
| 9 |
Correct |
88 ms |
18004 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
0 ms |
344 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 ms |
348 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
1 ms |
348 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| 20 |
Correct |
0 ms |
348 KB |
Output is correct |
| 21 |
Correct |
0 ms |
348 KB |
Output is correct |
| 22 |
Correct |
1 ms |
344 KB |
Output is correct |
| 23 |
Correct |
1 ms |
452 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
0 ms |
348 KB |
Output is correct |
| 26 |
Correct |
0 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
348 KB |
Output is correct |
| 28 |
Correct |
1 ms |
348 KB |
Output is correct |
| 29 |
Correct |
1 ms |
348 KB |
Output is correct |
| 30 |
Correct |
1 ms |
348 KB |
Output is correct |
| 31 |
Correct |
1 ms |
344 KB |
Output is correct |
| 32 |
Correct |
1 ms |
348 KB |
Output is correct |
| 33 |
Correct |
1 ms |
472 KB |
Output is correct |
| 34 |
Correct |
1 ms |
600 KB |
Output is correct |
| 35 |
Correct |
1 ms |
348 KB |
Output is correct |
| 36 |
Correct |
80 ms |
12004 KB |
Output is correct |
| 37 |
Correct |
99 ms |
15228 KB |
Output is correct |
| 38 |
Correct |
121 ms |
17712 KB |
Output is correct |
| 39 |
Correct |
105 ms |
14676 KB |
Output is correct |
| 40 |
Correct |
118 ms |
17872 KB |
Output is correct |
| 41 |
Correct |
118 ms |
17748 KB |
Output is correct |
| 42 |
Correct |
117 ms |
17748 KB |
Output is correct |
| 43 |
Correct |
114 ms |
19024 KB |
Output is correct |
| 44 |
Correct |
114 ms |
17836 KB |
Output is correct |
| 45 |
Correct |
102 ms |
22244 KB |
Output is correct |
