Submission #321586

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
321586	2020-11-12T19:52:24 Z	CSQ31	Mobile (BOI12_mobile)	C++14	50 / 100	178 ms	7020 KB

mobile

#pragma GCC optimize("Ofast") 
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define sz(a) (int)(a.size())
#define all(a) a.begin(),a.end()
#define lb lower_bound
#define ub upper_bound
#define owo ios_base::sync_with_stdio(0);cin.tie(0);
#define MOD (ll)(1e9+9)
#define INF (ll)(1e18)
#define debug(...) fprintf(stderr, __VA_ARGS__),fflush(stderr)
#define time__(d) for(long blockTime = 0; (blockTime == 0 ? (blockTime=clock()) != 0 : false);\
debug("%s time : %.4fs\n", d, (double)(clock() - blockTime) / CLOCKS_PER_SEC))
typedef long long int ll;
typedef long double ld;
typedef pair<ll,ll> PII;
typedef pair<int,int> pii;
typedef vector<vector<int>> vii;
typedef vector<vector<ll>> VII;
ll gcd(ll a,ll b){if(!b)return a;else return gcd(b,a%b);}
ld x[100000],y[100000];
int main()
{
	owo
	int n;
	cin>>n;
	ld L;cin>>L;
	for(int i=0;i<n;i++){
		cin>>x[i]>>y[i];
	}
	ld l = 1,r = L;
	while(r-l>1e-4){
		ld mid = (l+r)/2;
		ld cur = 0;
		for(int i=0;i<n;i++){
			ld lf,rg;
			if(y[i] > mid){lf=1e9+5;rg=-1e9;}
			else {ld dist = sqrt(mid*mid - y[i]*y[i]);
			      lf = x[i]-dist;
			      rg = x[i]+dist;
			  }
			if(cur >=lf)cur=max(cur,rg);
		}
		if(cur >= L)r=mid;
		else l=mid;
	}
	cout<<fixed<<setprecision(4)<<l;
}

Subtask #1
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	0 ms	364 KB	Output is correct
3	Correct	0 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct

Subtask #2
4.0 / 4.0

#	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

Subtask #3
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	492 KB	Output is correct
2	Correct	2 ms	492 KB	Output is correct
3	Correct	2 ms	364 KB	Output is correct
4	Correct	3 ms	364 KB	Output is correct

Subtask #4
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	492 KB	Output is correct
2	Correct	5 ms	492 KB	Output is correct
3	Correct	4 ms	492 KB	Output is correct
4	Correct	7 ms	492 KB	Output is correct

Subtask #5
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	492 KB	Output is correct
2	Correct	5 ms	492 KB	Output is correct
3	Correct	4 ms	492 KB	Output is correct
4	Correct	7 ms	492 KB	Output is correct

Subtask #6
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	492 KB	Output is correct
2	Correct	5 ms	492 KB	Output is correct
3	Correct	4 ms	492 KB	Output is correct
4	Correct	8 ms	504 KB	Output is correct
5	Correct	5 ms	492 KB	Output is correct

Subtask #7
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	63 ms	2668 KB	Output is correct
2	Correct	74 ms	2796 KB	Output is correct
3	Correct	41 ms	2028 KB	Output is correct
4	Correct	112 ms	2668 KB	Output is correct
5	Correct	44 ms	1900 KB	Output is correct

Subtask #8
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	80 ms	2852 KB	Output is correct
2	Correct	99 ms	2540 KB	Output is correct
3	Correct	106 ms	2884 KB	Output is correct
4	Correct	114 ms	2796 KB	Output is correct
5	Correct	136 ms	2992 KB	Output is correct

Subtask #9
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	74 ms	3156 KB	Output is correct
2	Correct	80 ms	2924 KB	Output is correct
3	Correct	65 ms	3052 KB	Output is correct
4	Correct	171 ms	3436 KB	Output is correct
5	Correct	101 ms	3308 KB	Output is correct

Subtask #10
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	102 ms	3436 KB	Output is correct
2	Correct	96 ms	3436 KB	Output is correct
3	Correct	74 ms	3436 KB	Output is correct
4	Correct	175 ms	3564 KB	Output is correct
5	Correct	131 ms	3436 KB	Output is correct

Subtask #11
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	107 ms	3436 KB	Output is correct
2	Correct	96 ms	3416 KB	Output is correct
3	Correct	73 ms	3436 KB	Output is correct
4	Correct	178 ms	3436 KB	Output is correct
5	Correct	131 ms	3564 KB	Output is correct

Subtask #12
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	51 ms	6764 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #13
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	66 ms	6764 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #14
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	52 ms	6764 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #15
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	72 ms	6764 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #16
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	52 ms	7020 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #17
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	68 ms	6764 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #18
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	56 ms	6816 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	69 ms	6764 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	53 ms	6764 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	65 ms	6764 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Submission #321586

Compilation message