oj.uz

Submission #15837

# Submission time Handle Problem Language Result Execution time Memory
15837 2015-07-30T12:01:21 Z comet 맛있는 과자 (kriii3_A) C++
0 / 33
 0 ms 1244 KB 
#include<cstdio>
#include<vector>
#include<algorithm>
#include<cmath>
using namespace std;
typedef long long ll;
void f(double a,double b,double c,ll N,ll K){
	//printf("%.12f %.12f %.12f %lld %lld\n",exp(a),exp(b),exp(c),N,K);
	if(N<0){
		printf("%.12f",log(exp(a)*exp(b)/2.0));
		return;
	}
	if(a>b+1e-9)swap(a,b);
	if(K<(1ll<<N)){
		f(a+b-c,(double)2.0*b-c,b,N-1,K);
	}
	else{
		f((double)2.0*a-c,a+b-c,a,N-1,K-(1ll<<N));
	}
}
int main(){
	ll N,K;
	double a,b,c;
	scanf("%lf%lf%lld%lld",&a,&b,&N,&K);
	if(a>b)swap(a,b);
	c=(double)sqrt(a*a+b*b);
	f((double)log(a),(double)log(b),(double)log(c),N-1,K);
}

Subtask #1
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1244 KB Output is correct
2 Incorrect 0 ms 1244 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0.0 / 23.0

# Verdict Execution time Memory Grader output
1 Halted 0 ms 0 KB -