Submission #853593

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
853593	2023-09-24T17:21:40 Z	noobnessOVERLOADED	Mobile (BOI12_mobile)	C++14	0 / 100	247 ms	8260 KB

mobile

#include<bits/stdc++.h>
using namespace std;

#define ll long long
#define forn(i,j) for(ll i = 0; i < j; i++)
#define pii pair<int,int>
#define vi vector<int>
#define vii vector<vector<int>>
#define pb push_back
#define p push
#define f first
#define s second

#define MOD 1000000007

void siout(string name = "") { 

	ios_base::sync_with_stdio(0);
	cin.tie(0); 
	
	if (!name.empty()) {
		freopen((name + ".in").c_str(), "r", stdin);
		freopen((name + ".out").c_str(), "w", stdout);
	}
}

int main(){
    siout();
    ll n, l;
    cin >> n >> l;
    pii coord[n];

    forn(i,n){ cin >> coord[i].f >> coord[i].s;}

    double hi = 1e9;
    double lo = 1;
    double ans;

    while(hi - lo > 1e-3){ 
        double mid = (hi + lo)/2;
        double m = 0;

        forn(i,n){
            double v = sqrt((mid*mid) - (coord[i].s*coord[i].s));       
            double a = coord[i].f - v;        
            double b = coord[i].f + v;
            
            if(a <= m){ m = max(m, b);}
        }

        if(m >= l){ hi = mid;} 
        else{ lo = mid;}
    }

    cout << setprecision(4) << lo << endl;
}

Compilation message

mobile.cpp: In function 'int main()':
mobile.cpp:37:12: warning: unused variable 'ans' [-Wunused-variable]
   37 |     double ans;
      |            ^~~
mobile.cpp: In function 'void siout(std::string)':
mobile.cpp:22:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |   freopen((name + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mobile.cpp:23:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |   freopen((name + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 4.0

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

Subtask #2
0 / 4.0

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

Subtask #3
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	Incorrect	1 ms	604 KB	Output isn't correct
5	Halted	0 ms	0 KB	-

Subtask #4
0 / 4.0

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

Subtask #5
0 / 4.0

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

Subtask #6
0 / 5.0

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

Subtask #7
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	24 ms	860 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #8
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	21 ms	860 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #9
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	19 ms	1140 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #10
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	24 ms	1116 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #11
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	24 ms	1116 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #12
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	110 ms	4344 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #13
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	133 ms	4344 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #14
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	128 ms	5128 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #15
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	147 ms	5128 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #16
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	147 ms	5908 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #17
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	175 ms	5904 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #18
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	186 ms	6692 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #19
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	194 ms	6688 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #20
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	213 ms	8256 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #21
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	247 ms	8260 KB	Output isn't correct
2	Halted	0 ms	0 KB	-