Submission #919300

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
919300	2024-01-31T14:41:11 Z	hqminhuwu	Mobile (BOI12_mobile)	C++14	100 / 100	956 ms	35460 KB

mobile

#include <bits/stdc++.h>
#define forr(_a,_b,_c) for(_a = (_b); _a <= (_c); ++_a)
#define ford(_a,_b,_c) for(_a = (_b) + 1; _a --> (_c);)
#define forf(_a,_b,_c) for(_a = (_b); _a < (_c); ++_a)
#define st first
#define nd second
#define ll long long
#define ull unsigned long long
#define pii pair <int,int>
#define pll pair <ll,ll>
#define piii pair <int,pii>
#define vi vector <int>
#define pb push_back
#define mp make_pair
#define all(x) begin(x),end(x)
#define file "test"
 
 
using namespace std;
const int N = 1e6 + 5;
const ll oo = 1e9;
const ll mod = 1e9 + 7;
 
int n, ff, i;
pll a[N];
 
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	#ifdef hqm
	   freopen(file".inp", "r", stdin); freopen(file".out", "w", stdout);
	#endif
 
	cin >> n >> ff;
 
	forr (i, 1, n)
		cin >> a[i].st >> a[i].nd;
	
	double l = 1, r = 2 * oo;
	int cnt = 100;
	while (cnt--){
		double mid = (r + l) / 2, qq = 0;
		forr (i, 1, n){
			double dis = sqrt(mid * mid - a[i].nd * a[i].nd);
			if (a[i].st - dis <= qq)
				qq = max (qq, a[i].st + dis);
		}
		if (qq >= ff)
			r = mid;
		else l = mid;
	}
 
	cout << fixed << setprecision(5) << l;
	return 0;
}
/*
 
 
 
*/

Subtask #1
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	1 ms	344 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	344 KB	Output is correct

Subtask #2
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	1 ms	344 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	344 KB	Output is correct

Subtask #3
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	344 KB	Output is correct
2	Correct	2 ms	348 KB	Output is correct
3	Correct	2 ms	344 KB	Output is correct
4	Correct	2 ms	344 KB	Output is correct

Subtask #4
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	344 KB	Output is correct
2	Correct	3 ms	600 KB	Output is correct
3	Correct	3 ms	600 KB	Output is correct
4	Correct	4 ms	348 KB	Output is correct

Subtask #5
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	344 KB	Output is correct
2	Correct	3 ms	348 KB	Output is correct
3	Correct	3 ms	344 KB	Output is correct
4	Correct	5 ms	344 KB	Output is correct

Subtask #6
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	344 KB	Output is correct
2	Correct	3 ms	344 KB	Output is correct
3	Correct	4 ms	344 KB	Output is correct
4	Correct	4 ms	348 KB	Output is correct
5	Correct	3 ms	344 KB	Output is correct

Subtask #7
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	73 ms	2672 KB	Output is correct
2	Correct	35 ms	2648 KB	Output is correct
3	Correct	27 ms	2648 KB	Output is correct
4	Correct	45 ms	2696 KB	Output is correct
5	Correct	29 ms	2648 KB	Output is correct

Subtask #8
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	46 ms	2648 KB	Output is correct
2	Correct	47 ms	2648 KB	Output is correct
3	Correct	52 ms	2672 KB	Output is correct
4	Correct	59 ms	2648 KB	Output is correct
5	Correct	55 ms	2672 KB	Output is correct

Subtask #9
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	41 ms	2652 KB	Output is correct
2	Correct	37 ms	2648 KB	Output is correct
3	Correct	39 ms	2652 KB	Output is correct
4	Correct	72 ms	2676 KB	Output is correct
5	Correct	49 ms	2648 KB	Output is correct

Subtask #10
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	44 ms	2668 KB	Output is correct
2	Correct	52 ms	2648 KB	Output is correct
3	Correct	47 ms	2896 KB	Output is correct
4	Correct	62 ms	2648 KB	Output is correct
5	Correct	71 ms	2648 KB	Output is correct

Subtask #11
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	44 ms	2648 KB	Output is correct
2	Correct	46 ms	2648 KB	Output is correct
3	Correct	48 ms	2896 KB	Output is correct
4	Correct	66 ms	2676 KB	Output is correct
5	Correct	61 ms	2672 KB	Output is correct

Subtask #12
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	207 ms	8824 KB	Output is correct
2	Correct	231 ms	8784 KB	Output is correct
3	Correct	222 ms	8792 KB	Output is correct
4	Correct	308 ms	8784 KB	Output is correct
5	Correct	287 ms	8784 KB	Output is correct

Subtask #13
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	264 ms	8824 KB	Output is correct
2	Correct	566 ms	8824 KB	Output is correct
3	Correct	246 ms	8828 KB	Output is correct
4	Correct	339 ms	9040 KB	Output is correct
5	Correct	308 ms	8784 KB	Output is correct

Subtask #14
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	244 ms	11592 KB	Output is correct
2	Correct	300 ms	20168 KB	Output is correct
3	Correct	292 ms	19456 KB	Output is correct
4	Correct	381 ms	22784 KB	Output is correct
5	Correct	392 ms	18872 KB	Output is correct

Subtask #15
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	306 ms	12304 KB	Output is correct
2	Correct	660 ms	18816 KB	Output is correct
3	Correct	278 ms	17724 KB	Output is correct
4	Correct	393 ms	22784 KB	Output is correct
5	Correct	371 ms	19624 KB	Output is correct

Subtask #16
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	281 ms	14512 KB	Output is correct
2	Correct	333 ms	23788 KB	Output is correct
3	Correct	322 ms	23164 KB	Output is correct
4	Correct	465 ms	26468 KB	Output is correct
5	Correct	431 ms	21976 KB	Output is correct

Subtask #17
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	344 ms	16024 KB	Output is correct
2	Correct	720 ms	22188 KB	Output is correct
3	Correct	355 ms	21332 KB	Output is correct
4	Correct	502 ms	26328 KB	Output is correct
5	Correct	444 ms	23084 KB	Output is correct

Subtask #18
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	363 ms	17232 KB	Output is correct
2	Correct	384 ms	27404 KB	Output is correct
3	Correct	381 ms	26628 KB	Output is correct
4	Correct	572 ms	30648 KB	Output is correct
5	Correct	518 ms	26248 KB	Output is correct

Subtask #19
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	385 ms	19972 KB	Output is correct
2	Correct	797 ms	25568 KB	Output is correct
3	Correct	405 ms	24512 KB	Output is correct
4	Correct	556 ms	30544 KB	Output is correct
5	Correct	506 ms	26580 KB	Output is correct

Subtask #20
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	466 ms	20480 KB	Output is correct
2	Correct	502 ms	31468 KB	Output is correct
3	Correct	475 ms	30776 KB	Output is correct
4	Correct	646 ms	35316 KB	Output is correct
5	Correct	634 ms	29588 KB	Output is correct

Subtask #21
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	478 ms	24080 KB	Output is correct
2	Correct	956 ms	29452 KB	Output is correct
3	Correct	516 ms	28392 KB	Output is correct
4	Correct	689 ms	35460 KB	Output is correct
5	Correct	629 ms	30856 KB	Output is correct

Submission #919300

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