oj.uz

Submission #1093037

# Submission time Handle Problem Language Result Execution time Memory
1093037 2024-09-25T18:14:42 Z TommasoUlian Mobile (BOI12_mobile) C++17
0 / 100
 893 ms 49028 KB 
#include <bits/stdc++.h>
#define PB push_back
#define MP makepair
#ifndef ONLINE_JUDGE
#define DEBUG(x) cout << #x << " = " << (x) << endl
#else
#define DEBUG(x)
#endif
#define FOR(n) for(int i = 0; i < (n); i++)
#define SORTA(v) sort((v).begin(), (v).end())
#define SORTD(v) sort((v).rbegin(), (v).rend())
#define PRINT(v) for(auto x: (v))cout << x << " "; cout << endl;
#define TWO(n) (1 << (n))
#define INPUT(v) for(auto &x : (v))cin >> x;
#pragma GCC optimize("Ofast,no-stack-protector",3)
 
typedef long long ll;
 
using namespace std;
 
vector<pair<ll,ll>> torri;
ll n,L;
 
bool good(double r){
    queue<pair<ll,ll>> s;
    
    for(auto a:torri){
        double x = a.first, y = a.second;
        if(r*r >= y*y)s.push({max(0.0,x-sqrt(r*r-y*y)),min((double)L,x+sqrt(r*r-y*y))});
    }
    double curr = 0;
    while(!s.empty()){
        auto seg = s.front();
        s.pop();
        if(seg.first <= curr){
            curr = seg.second;
        }
        else return false;
    }
    if(curr < L)return false;
    return true;
}
 
void solve(){
    cin >> n >> L;
    torri = vector<pair<ll,ll>>(n);
    for(int i = 0; i < n; i++){
        cin >> torri[i].first >> torri[i].second;
 
    }
    double l = 1, r = 20e14;
    double ans = r;
    
    while(r-l >= 0.000001){
        double c = (l + (r-l)/2);
        //cout << c << endl;
        if(good(c)){
            ans = min(ans,c);
            r = c;
        }
        else{
            l = c;
        }
 
    }
    cout << ans << endl;
    
}
 
int main(){
    cout << setprecision(18);
    ios::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    solve();
    return 0;
}

Subtask #1
0 / 4.0

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

Subtask #2
0 / 4.0

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

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 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 604 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 604 KB Output isn't correct
2 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 76 ms 3780 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 61 ms 3908 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 3932 KB Output is correct
2 Incorrect 63 ms 4424 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 98 ms 5240 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 76 ms 5336 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 430 ms 20828 KB Output is correct
2 Incorrect 433 ms 24260 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 428 ms 24804 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 517 ms 25104 KB Output is correct
2 Incorrect 498 ms 29124 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 481 ms 29592 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 567 ms 29244 KB Output is correct
2 Incorrect 603 ms 33848 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 578 ms 34492 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 693 ms 33128 KB Output is correct
2 Incorrect 710 ms 38624 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 706 ms 39344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 893 ms 41208 KB Output is correct
2 Incorrect 851 ms 48092 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 862 ms 49028 KB Output isn't correct
2 Halted 0 ms 0 KB -