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답안 #919300

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
919300 2024-01-31T14:41:11 Z hqminhuwu Mobile (BOI12_mobile) C++14
100 / 100
 956 ms 35460 KB 
#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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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