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Submission #943350

# Submission time Handle Problem Language Result Execution time Memory
943350 2024-03-11T11:17:04 Z abel2008 Mobile (BOI12_mobile) C++17
100 / 100
 343 ms 16252 KB 
#include <iostream>
#include <iomanip>
#include <cmath>
#define ll long long
using namespace std;
ll n,len;
pair<ll,ll> a[1000005];
//ll lungimi[1000006];
int main() {
        ios_base::sync_with_stdio(false);
        cin.tie(nullptr);
        cin>>n>>len;
        for (int i = 1;i<=n;++i) {
                cin>>a[i].first>>a[i].second;
        }
        double l = 1,r = 1.5e9;
        while(r-l>1e-3) {
                double mid = (l+r)/2,curr = 0;
                for (int i = 1;i<=n;++i) {
                        // aflam prt dr si st
                        double st,dr,dif;
                        dif = sqrt((mid*mid)-(a[i].second*a[i].second));
                        st = a[i].first-dif,dr = a[i].first+dif;
                        if (st<=curr) {
                                curr=max(curr,dr);
                        }
                }
                if (curr >= len)
                        r = mid;
                else
                        l = mid;
        }
        cout<<fixed<<setprecision(4)<<l;
        return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 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 #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 344 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 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

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

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 540 KB Output is correct
3 Correct 1 ms 540 KB Output is correct
4 Correct 2 ms 348 KB Output is correct

Subtask #6
5.0 / 5.0

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

# Verdict Execution time Memory Grader output
1 Correct 25 ms 2652 KB Output is correct
2 Correct 19 ms 2652 KB Output is correct
3 Correct 13 ms 2648 KB Output is correct
4 Correct 25 ms 2648 KB Output is correct
5 Correct 12 ms 2652 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 2652 KB Output is correct
2 Correct 23 ms 2652 KB Output is correct
3 Correct 27 ms 2652 KB Output is correct
4 Correct 28 ms 2880 KB Output is correct
5 Correct 29 ms 2696 KB Output is correct

Subtask #9
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 2652 KB Output is correct
2 Correct 20 ms 2652 KB Output is correct
3 Correct 20 ms 2652 KB Output is correct
4 Correct 35 ms 2696 KB Output is correct
5 Correct 24 ms 2652 KB Output is correct

Subtask #10
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 2648 KB Output is correct
2 Correct 24 ms 2652 KB Output is correct
3 Correct 23 ms 2652 KB Output is correct
4 Correct 33 ms 2648 KB Output is correct
5 Correct 28 ms 2652 KB Output is correct

Subtask #11
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 2904 KB Output is correct
2 Correct 24 ms 2648 KB Output is correct
3 Correct 25 ms 2652 KB Output is correct
4 Correct 35 ms 2648 KB Output is correct
5 Correct 30 ms 2652 KB Output is correct

Subtask #12
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 105 ms 8788 KB Output is correct
2 Correct 124 ms 8788 KB Output is correct
3 Correct 125 ms 9076 KB Output is correct
4 Correct 168 ms 8788 KB Output is correct
5 Correct 160 ms 8788 KB Output is correct

Subtask #13
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 8824 KB Output is correct
2 Correct 182 ms 8824 KB Output is correct
3 Correct 121 ms 8832 KB Output is correct
4 Correct 160 ms 8816 KB Output is correct
5 Correct 158 ms 9056 KB Output is correct

Subtask #14
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 126 ms 10836 KB Output is correct
2 Correct 145 ms 10836 KB Output is correct
3 Correct 145 ms 10880 KB Output is correct
4 Correct 202 ms 10836 KB Output is correct
5 Correct 174 ms 10836 KB Output is correct

Subtask #15
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 147 ms 10876 KB Output is correct
2 Correct 214 ms 10864 KB Output is correct
3 Correct 141 ms 10832 KB Output is correct
4 Correct 205 ms 10880 KB Output is correct
5 Correct 189 ms 10872 KB Output is correct

Subtask #16
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 12924 KB Output is correct
2 Correct 168 ms 12880 KB Output is correct
3 Correct 167 ms 12936 KB Output is correct
4 Correct 231 ms 12928 KB Output is correct
5 Correct 215 ms 12888 KB Output is correct

Subtask #17
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 174 ms 12932 KB Output is correct
2 Correct 243 ms 12884 KB Output is correct
3 Correct 167 ms 12928 KB Output is correct
4 Correct 230 ms 12880 KB Output is correct
5 Correct 219 ms 12884 KB Output is correct

Subtask #18
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 172 ms 15184 KB Output is correct
2 Correct 195 ms 14928 KB Output is correct
3 Correct 187 ms 15184 KB Output is correct
4 Correct 281 ms 14984 KB Output is correct
5 Correct 238 ms 14984 KB Output is correct

Subtask #19
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 192 ms 14932 KB Output is correct
2 Correct 274 ms 14928 KB Output is correct
3 Correct 194 ms 14976 KB Output is correct
4 Correct 267 ms 14984 KB Output is correct
5 Correct 233 ms 14984 KB Output is correct

Subtask #20
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 222 ms 15956 KB Output is correct
2 Correct 233 ms 15952 KB Output is correct
3 Correct 232 ms 15952 KB Output is correct
4 Correct 331 ms 16252 KB Output is correct
5 Correct 290 ms 15952 KB Output is correct

Subtask #21
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 243 ms 16244 KB Output is correct
2 Correct 343 ms 15992 KB Output is correct
3 Correct 241 ms 15988 KB Output is correct
4 Correct 334 ms 15956 KB Output is correct
5 Correct 296 ms 15952 KB Output is correct