oj.uz

Submission #123056

# Submission time Handle Problem Language Result Execution time Memory
123056 2019-06-30T06:48:38 Z mechfrog88 Lightning Rod (NOI18_lightningrod) C++14
40 / 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;	


vector <ll> id;

ll find(ll i){
	if (id[i] <= -1) return i;
	return id[i] = find(id[i]); 
}

void unio(ll i,ll j){
	ll a = find(i);
	ll b = find(j);
	if (a == b) return;
	id[a] += id[b];
	id[b] = a;
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	ll n;
	cin >> n;
	vector <pair<ll,ll>> arr(n);
	id.resize(n,-1);
	for (int z=0;z<n;z++){
		cin >> arr[z].first >> arr[z].second;
	}
	for (int z=0;z<n;z++){
		if (id[z] >= 0) continue;
		ll x1 = arr[z].first-arr[z].second;
		ll x2 = arr[z].first+arr[z].second;
		for (int x=0;x<n;x++){
			if (id[x] >= 0) continue;
			ll x3 = arr[x].first-arr[x].second;
			ll x4 = arr[x].first+arr[x].second;
			if ((x1 <= x3 && x4 <= x2)){
				if (id[x] >= 0) continue;
				unio(z,x);
			}
		}
	}
	ll ans = 0;
	for (int z=0;z<n;z++){
		if (id[z] < 0) ans++;
	}
	cout << ans << endl;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2058 ms 262144 KB Time limit exceeded
2 Halted 0 ms 0 KB -

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 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 380 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 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 380 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 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 380 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 380 KB Output is correct
12 Correct 7 ms 380 KB Output is correct
13 Correct 10 ms 376 KB Output is correct

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 380 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 380 KB Output is correct
12 Correct 7 ms 380 KB Output is correct
13 Correct 10 ms 376 KB Output is correct
14 Correct 343 ms 8304 KB Output is correct
15 Correct 295 ms 8312 KB Output is correct
16 Execution timed out 2057 ms 7416 KB Time limit exceeded

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2023 ms 262144 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2058 ms 262144 KB Time limit exceeded
2 Halted 0 ms 0 KB -