Submission #973125

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
973125	2024-05-01T14:02:29 Z	njoop	Mobile (BOI12_mobile)	C++14	0 / 100	617 ms	34380 KB

mobile

#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#define pi pair<double, double>
using namespace std;

double x, y, L, l=0, r=1e9, mid, de, cov;
pi arr[1000010];
vector<pi> in;
int n;

bool solve(double rad) {
    in.clear();
    cov = 0;
    for(int i=1; i<=n; i++) {
        de = sqrt(rad*rad - arr[i].second*arr[i].second);
        in.push_back({arr[i].first-de, arr[i].first+de});
    }
    for(auto i: in) {
        if(i.first > cov) return 0;
        cov = max(cov, i.second);
        if(cov >= L) return 1;
    }
    return 0;
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> L;
    for(int i=1; i<=n; i++) {
        cin >> arr[i].first >> arr[i].second;
    }
    while(l+0.0001 < r) {
        mid = (l+r)/2;
        if(solve(mid)) {
            r = mid;
        } else {
            l = mid + 0.0001;
        }
    }
    cout << fixed << setprecision(6) << l;
    return 0;
}

Subtask #1
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Incorrect	0 ms	344 KB	Output isn't correct
4	Halted	0 ms	0 KB	-

Subtask #2
0 / 4.0

#	Verdict	Memory	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Incorrect	348 KB	Output isn't correct
5	Halted	0 KB	-

Subtask #3
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	2 ms	600 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	3 ms	856 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	760 KB	Output is correct
2	Correct	3 ms	604 KB	Output is correct
3	Incorrect	2 ms	604 KB	Output isn't correct
4	Halted	0 ms	0 KB	-

Subtask #6
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	3 ms	604 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #7
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	42 ms	4816 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #8
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	40 ms	4816 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #9
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	38 ms	4820 KB	Output is correct
2	Incorrect	38 ms	4824 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #10
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	48 ms	4820 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #11
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	58 ms	4816 KB	Output is correct
2	Incorrect	49 ms	4812 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #12
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	229 ms	17388 KB	Output is correct
2	Correct	234 ms	19140 KB	Output is correct
3	Correct	231 ms	18372 KB	Output is correct
4	Incorrect	291 ms	17392 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #13
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	260 ms	17400 KB	Output is correct
2	Incorrect	316 ms	17648 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #14
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	283 ms	27364 KB	Output is correct
2	Incorrect	278 ms	28396 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #15
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	288 ms	27616 KB	Output is correct
2	Incorrect	389 ms	29380 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #16
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	338 ms	29416 KB	Output is correct
2	Incorrect	321 ms	30152 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #17
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	347 ms	29936 KB	Output is correct
2	Incorrect	428 ms	30144 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #18
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	362 ms	31680 KB	Output is correct
2	Incorrect	386 ms	32964 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	388 ms	33220 KB	Output is correct
2	Incorrect	492 ms	32228 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	463 ms	34240 KB	Output is correct
2	Incorrect	468 ms	34380 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	474 ms	34244 KB	Output is correct
2	Incorrect	617 ms	32924 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Submission #973125

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