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Submission #1104580

# Submission time Handle Problem Language Result Execution time Memory
1104580 2024-10-24T05:16:28 Z EkinOnal Mobile (BOI12_mobile) C++17
50 / 100
 1000 ms 48244 KB 
//#pragma GCC optimize("O3,unroll-loops,Ofast")
//#pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")
#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>
using namespace std;
// using namespace __gnu_pbds;
 
#define MAX 200005
#define pb push_back
#define mp make_pair 
#define int long long
#define f first
#define s second
#define vi vector<int>
#define pii pair<int,int>
#define si set<int>
#define vpii vector<pair<int,int>> 
const int mod = 1e9+7;
const int INF = 1e18;
// myMap.begin()->first :  key
// myMap.begin()->second : value
//#define double double

int epow(int a,int b){int ans=1;while(b){if(b&1) ans*=a;a*=a;b>>=1;a%=mod;ans%=mod;}return ans%=mod;}
int gcd(int a,int b) {if(a<b)swap(a,b);while(b){int tmp=b;b=a%b;a=tmp;}return a;}
int mul(long long a,long long b){return ((a%mod)*(b%mod))%mod;}
int sum(long long a,long long b){return ((a%mod)+(b%mod))%mod;}
 // typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>ordered_set;
// typedef
// tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>ordered_multiset;


void solve(){
	int n,L; cin>>n>>L;
	vpii v(n+2); for(int i=1;i<=n;i++) cin>>v[i].f>>v[i].s;

	double l=0,r=2e9;
	while(r-l>1e-6){
		vector<pair<double,double>> arr;
		double mid=(l+r)/2.0;

		for(int i=1;i<=n;i++){
			if(v[i].s*v[i].s>mid*mid) continue;
			double a = sqrt(mid*mid-v[i].s*v[i].s);
			arr.pb({v[i].f-a,v[i].f+a});
		}

		sort(arr.begin(),arr.end(),[&](auto l, auto r){return l.s < r.s;});
		double mx=0.0;
		for(auto u : arr){
			if(u.f<=mx) mx=max(mx,u.s);
		}		

		if(mx<(double)L) l=mid;
		else r=mid;
	}
	cout << fixed << setprecision(6);
	cout<<l<<endl;

  	

	return;
}
 
int32_t main(/*int32_t argc, char* argv[]*/){
	ios_base::sync_with_stdio(0); cin.tie(0);
	// freopen("dining.in", "r", stdin);
	// freopen("dining.out", "w", stdout);		
 
	int t=1;
//	cin >> t;
	while (t--) solve();
 
	return 0;	 			
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 592 KB Output is correct
2 Correct 3 ms 592 KB Output is correct
3 Correct 2 ms 336 KB Output is correct
4 Correct 4 ms 592 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 736 KB Output is correct
2 Correct 8 ms 764 KB Output is correct
3 Correct 7 ms 736 KB Output is correct
4 Correct 7 ms 736 KB Output is correct

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 752 KB Output is correct
2 Correct 8 ms 752 KB Output is correct
3 Correct 7 ms 736 KB Output is correct
4 Correct 5 ms 736 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 752 KB Output is correct
2 Correct 9 ms 752 KB Output is correct
3 Correct 7 ms 736 KB Output is correct
4 Correct 5 ms 720 KB Output is correct
5 Correct 6 ms 748 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 113 ms 4920 KB Output is correct
2 Correct 279 ms 4980 KB Output is correct
3 Correct 99 ms 3216 KB Output is correct
4 Correct 90 ms 4892 KB Output is correct
5 Correct 82 ms 3176 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 125 ms 4984 KB Output is correct
2 Correct 94 ms 5620 KB Output is correct
3 Correct 107 ms 5020 KB Output is correct
4 Correct 88 ms 5064 KB Output is correct
5 Correct 79 ms 5224 KB Output is correct

Subtask #9
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 208 ms 5408 KB Output is correct
2 Correct 323 ms 5132 KB Output is correct
3 Correct 110 ms 5156 KB Output is correct
4 Correct 62 ms 5568 KB Output is correct
5 Correct 138 ms 5304 KB Output is correct

Subtask #10
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 313 ms 5700 KB Output is correct
2 Correct 380 ms 5664 KB Output is correct
3 Correct 217 ms 5664 KB Output is correct
4 Correct 69 ms 5568 KB Output is correct
5 Correct 138 ms 5748 KB Output is correct

Subtask #11
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 238 ms 5720 KB Output is correct
2 Correct 392 ms 5680 KB Output is correct
3 Correct 206 ms 5664 KB Output is correct
4 Correct 64 ms 5568 KB Output is correct
5 Correct 131 ms 5656 KB Output is correct

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 934 ms 24368 KB Output is correct
2 Execution timed out 1052 ms 24312 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1065 ms 24332 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1052 ms 36432 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1063 ms 37560 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1064 ms 40464 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1051 ms 39972 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1045 ms 42068 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1049 ms 42760 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1044 ms 48224 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1057 ms 48244 KB Time limit exceeded
2 Halted 0 ms 0 KB -