답안 #920756

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
920756	2024-02-03T02:35:40 Z	ethanv13	Mobile (BOI12_mobile)	C++17	100 / 100	410 ms	35408 KB

mobile

#include <bits/stdc++.h>
using namespace std;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    long long n,l;cin>>n>>l;
    vector<pair<long long,long long>>a(n);
    for(int i=0;i<n;++i){
        cin>>a[i].first>>a[i].second;
    }
    double lo=0;
    double hi=4e9;
    double delta=1e-5;
    while(hi-lo>delta){
        double mid=(lo+hi)/2;
        double curr=0;
        for(int i=0;i<n;++i){
            double dist=sqrt(mid*mid-a[i].second*a[i].second);
            if(a[i].first-dist<=curr){curr=max(a[i].first+dist,curr);}
        }
        if(curr>=l){hi=mid;}else{lo=mid;}
    }
    cout<<fixed<<setprecision(5);
    cout<<lo<<endl;
}

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	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	404 KB	Output is correct

Subtask #3
4.0 / 4.0

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

Subtask #4
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	348 KB	Output is correct
2	Correct	2 ms	344 KB	Output is correct
3	Correct	2 ms	344 KB	Output is correct
4	Correct	2 ms	348 KB	Output is correct

Subtask #5
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	348 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 #6
5.0 / 5.0

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

Subtask #7
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	1628 KB	Output is correct
2	Correct	20 ms	1668 KB	Output is correct
3	Correct	14 ms	1116 KB	Output is correct
4	Correct	27 ms	1628 KB	Output is correct
5	Correct	14 ms	1116 KB	Output is correct

Subtask #8
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	23 ms	1628 KB	Output is correct
2	Correct	22 ms	1368 KB	Output is correct
3	Correct	26 ms	1628 KB	Output is correct
4	Correct	27 ms	1624 KB	Output is correct
5	Correct	31 ms	1628 KB	Output is correct

Subtask #9
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	1624 KB	Output is correct
2	Correct	22 ms	1624 KB	Output is correct
3	Correct	22 ms	1796 KB	Output is correct
4	Correct	45 ms	2016 KB	Output is correct
5	Correct	27 ms	1868 KB	Output is correct

Subtask #10
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	1884 KB	Output is correct
2	Correct	27 ms	1880 KB	Output is correct
3	Correct	26 ms	1884 KB	Output is correct
4	Correct	48 ms	2012 KB	Output is correct
5	Correct	32 ms	1884 KB	Output is correct

Subtask #11
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	2016 KB	Output is correct
2	Correct	27 ms	1884 KB	Output is correct
3	Correct	26 ms	1884 KB	Output is correct
4	Correct	39 ms	1884 KB	Output is correct
5	Correct	33 ms	1884 KB	Output is correct

Subtask #12
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	117 ms	8532 KB	Output is correct
2	Correct	131 ms	8284 KB	Output is correct
3	Correct	128 ms	8280 KB	Output is correct
4	Correct	179 ms	8284 KB	Output is correct
5	Correct	164 ms	8280 KB	Output is correct

Subtask #13
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	133 ms	8280 KB	Output is correct
2	Correct	225 ms	8284 KB	Output is correct
3	Correct	131 ms	8284 KB	Output is correct
4	Correct	175 ms	8792 KB	Output is correct
5	Correct	162 ms	8284 KB	Output is correct

Subtask #14
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	140 ms	9816 KB	Output is correct
2	Correct	156 ms	9820 KB	Output is correct
3	Correct	152 ms	9816 KB	Output is correct
4	Correct	213 ms	9836 KB	Output is correct
5	Correct	189 ms	9816 KB	Output is correct

Subtask #15
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	159 ms	9820 KB	Output is correct
2	Correct	263 ms	9836 KB	Output is correct
3	Correct	154 ms	10220 KB	Output is correct
4	Correct	217 ms	9820 KB	Output is correct
5	Correct	191 ms	9844 KB	Output is correct

Subtask #16
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	166 ms	11496 KB	Output is correct
2	Correct	183 ms	11356 KB	Output is correct
3	Correct	179 ms	11408 KB	Output is correct
4	Correct	256 ms	11352 KB	Output is correct
5	Correct	224 ms	20236 KB	Output is correct

Subtask #17
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	186 ms	11356 KB	Output is correct
2	Correct	299 ms	11404 KB	Output is correct
3	Correct	179 ms	11408 KB	Output is correct
4	Correct	249 ms	11352 KB	Output is correct
5	Correct	232 ms	21388 KB	Output is correct

Subtask #18
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	183 ms	12892 KB	Output is correct
2	Correct	214 ms	12972 KB	Output is correct
3	Correct	204 ms	12892 KB	Output is correct
4	Correct	288 ms	12888 KB	Output is correct
5	Correct	266 ms	24092 KB	Output is correct

Subtask #19
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	214 ms	12888 KB	Output is correct
2	Correct	331 ms	12968 KB	Output is correct
3	Correct	204 ms	12892 KB	Output is correct
4	Correct	289 ms	12976 KB	Output is correct
5	Correct	258 ms	24400 KB	Output is correct

Subtask #20
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	230 ms	16104 KB	Output is correct
2	Correct	269 ms	16208 KB	Output is correct
3	Correct	258 ms	16100 KB	Output is correct
4	Correct	410 ms	16100 KB	Output is correct
5	Correct	325 ms	29652 KB	Output is correct

Subtask #21
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	267 ms	16108 KB	Output is correct
2	Correct	410 ms	15964 KB	Output is correct
3	Correct	273 ms	28500 KB	Output is correct
4	Correct	366 ms	35408 KB	Output is correct
5	Correct	339 ms	31060 KB	Output is correct

답안 #920756

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