답안 #1026826

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1026826	2024-07-18T12:09:10 Z	PooyaDaftarian	Mobile (BOI12_mobile)	C++17	12 / 100	449 ms	24780 KB

mobile

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef long double ld;

#define all(x) x.begin(), x.end()
#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL)
#define file(x) freopen(x ".in", "r", stdin); freopen(x ".out", "w", stdout)
#define endl '\n'
#define pb push_back
#define ms(x, y) memset(x, y, sizeof x)
#define out(x) {cout << x << '\n'; return;}
#define ff first
#define ss second
#define sz(x) (int)(x).size()
#define int ll

int n, L;
vector<pii> a;

bool chk(ld x){
    ld mx = 0;
    for (int i = 0 ; i < n ; i++){
        ld d = sqrt(x*x - a[i].ss*a[i].ss);
        ld x = a[i].ff - d, y = a[i].ff + d;
        if (x <= mx) mx = max(mx, y);
    }
    return (mx < L);
}

int32_t main(){
    fast_io;
    cout << fixed << setprecision(12);
	cin >> n >> L;
    a.assign(n, {0, 0});
    for (int i = 0 ; i < n ; i++){
        int x, h; cin >> x >> h;
        a[i] = {x, h};
    }
    ld l = 1, r = 1e10, mid;
    for (int i = 0 ; i < 60 ; i++){
        mid = l + (r-l)/2;
        if (chk(mid)) l = mid;
        else r = mid;
    }
    cout << l << endl;
    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	메모리	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	492 KB	Output is correct
2	Correct	2 ms	348 KB	Output is correct
3	Correct	2 ms	348 KB	Output is correct
4	Correct	2 ms	348 KB	Output is correct

Subtask #4
0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	348 KB	Output is correct
2	Correct	2 ms	348 KB	Output is correct
3	Correct	3 ms	348 KB	Output is correct
4	Incorrect	4 ms	564 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #5
0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	348 KB	Output is correct
2	Correct	2 ms	348 KB	Output is correct
3	Correct	3 ms	348 KB	Output is correct
4	Incorrect	4 ms	572 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #6
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	348 KB	Output is correct
2	Correct	2 ms	348 KB	Output is correct
3	Correct	3 ms	532 KB	Output is correct
4	Incorrect	4 ms	348 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #7
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	71 ms	1628 KB	Output is correct
2	Incorrect	33 ms	2004 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #8
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	68 ms	1700 KB	Output is correct
2	Correct	66 ms	1628 KB	Output is correct
3	Incorrect	86 ms	2256 KB	Output isn't correct
4	Halted	0 ms	0 KB	-

Subtask #9
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	1628 KB	Output is correct
2	Incorrect	35 ms	2140 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #10
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	51 ms	2652 KB	Output is correct
2	Incorrect	43 ms	2652 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #11
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	49 ms	2652 KB	Output is correct
2	Incorrect	43 ms	2652 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #12
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	230 ms	8592 KB	Output is correct
2	Incorrect	227 ms	11860 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #13
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	212 ms	12376 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #14
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	276 ms	10068 KB	Output is correct
2	Incorrect	255 ms	14356 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #15
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	255 ms	14932 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #16
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	323 ms	11800 KB	Output is correct
2	Incorrect	308 ms	16552 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #17
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	328 ms	17340 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #18
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	369 ms	13396 KB	Output is correct
2	Incorrect	340 ms	18984 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	330 ms	19884 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	440 ms	16740 KB	Output is correct
2	Incorrect	430 ms	23772 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	449 ms	24780 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

답안 #1026826

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