oj.uz

Submission #123100

# Submission time Handle Problem Language Result Execution time Memory
123100 2019-06-30T08:38:58 Z mechfrog88 Lightning Rod (NOI18_lightningrod) C++14
80 / 100
 2000 ms 262144 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC optimize("unroll-loops,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
 
using namespace __gnu_pbds;
using namespace std;
 
template <typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
typedef long long ll;
typedef long double ld;	

inline int readInt() {
    int x = 0;
    char ch = getchar();
    while (ch < '0' || ch > '9') ch = getchar();
    while (ch >= '0' && ch <= '9'){
		x = (x << 3) + (x << 1) + ch - '0';
		ch = getchar();
	}
    return x;
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	int n;
	n = readInt();
	vector <pair<int,int>> arr(n);
	for (int z=0;z<n;z++){
		arr[z].first = readInt();
		arr[z].second = readInt();
		int t = arr[z].first;
		arr[z].first -= arr[z].second;
		arr[z].second += t;
	}
	stack <pair<int,int>> s;
	for (int z=0;z<n;z++){
		if (s.empty()){
			s.push(arr[z]);
		}
		if (s.top().first <= arr[z].first && arr[z].second <= s.top().second) continue;
		else{
			while (arr[z].first <= s.top().first && s.top().second <= arr[z].second){
				s.pop();
				if (s.size() == 0) break;
			}
			s.push(arr[z]);
		}
	}
	printf("%d",int(s.size()));
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1794 ms 155668 KB Output is correct
2 Correct 1810 ms 262144 KB Output is correct
3 Correct 1791 ms 260040 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 54 ms 2168 KB Output is correct
15 Correct 56 ms 2288 KB Output is correct
16 Correct 47 ms 2900 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1604 ms 129660 KB Output is correct
2 Correct 1609 ms 222316 KB Output is correct
3 Correct 1567 ms 210560 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1794 ms 155668 KB Output is correct
2 Correct 1810 ms 262144 KB Output is correct
3 Correct 1791 ms 260040 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 3 ms 376 KB Output is correct
17 Correct 54 ms 2168 KB Output is correct
18 Correct 56 ms 2288 KB Output is correct
19 Correct 47 ms 2900 KB Output is correct
20 Correct 1604 ms 129660 KB Output is correct
21 Correct 1609 ms 222316 KB Output is correct
22 Correct 1567 ms 210560 KB Output is correct
23 Execution timed out 2051 ms 207600 KB Time limit exceeded
24 Halted 0 ms 0 KB -