/***
Md. Namzul Hasan
Shahjalal University of Science & Technology,Sylhet.
hasan08sust@gmail.com
***/
#include<bits/stdc++.h>
using namespace std ;
typedef long long ll ;
typedef int in ;
typedef unsigned long long ull ;
const double pi = 2*acos(0) ;
#define maxi 40000
#define pf printf
#define sc scanf
#define pb push_back
#define MEM(x,y) (memset((x),(y),sizeof(x)))
#define MIN(x,y) ((x) < (y) ? (x) : (y))
#define MAX(x,y) ((x) > (y) ? (x) : (y))
#define load(array,size) for(int i=0 ; i<size ; i++) cin>>array[i] ;
#define new_line pf("\n")
#define clear_data(array) memset(array,0,sizeof(array))
#define highest_int 2147483647
int main()
{
int n ,T ;
while(cin>>n>>T)
{
double r=0 ,t=0 ;
double x =0 ,y=0 ;
for(int i =0 ;i<n ;i++)
{
sc("%lf %lf",&r,&t) ;
double angle = 2* pi * (T/t) ;
x += r * cos(angle) ;
y += r*sin(angle) ;
if(i)
pf(" ") ;
pf("%.4lf",hypot(x,y)) ;
}
pf("\n") ;
}
return 0;
}
Md. Namzul Hasan
Shahjalal University of Science & Technology,Sylhet.
hasan08sust@gmail.com
***/
#include<bits/stdc++.h>
using namespace std ;
typedef long long ll ;
typedef int in ;
typedef unsigned long long ull ;
const double pi = 2*acos(0) ;
#define maxi 40000
#define pf printf
#define sc scanf
#define pb push_back
#define MEM(x,y) (memset((x),(y),sizeof(x)))
#define MIN(x,y) ((x) < (y) ? (x) : (y))
#define MAX(x,y) ((x) > (y) ? (x) : (y))
#define load(array,size) for(int i=0 ; i<size ; i++) cin>>array[i] ;
#define new_line pf("\n")
#define clear_data(array) memset(array,0,sizeof(array))
#define highest_int 2147483647
int main()
{
int n ,T ;
while(cin>>n>>T)
{
double r=0 ,t=0 ;
double x =0 ,y=0 ;
for(int i =0 ;i<n ;i++)
{
sc("%lf %lf",&r,&t) ;
double angle = 2* pi * (T/t) ;
x += r * cos(angle) ;
y += r*sin(angle) ;
if(i)
pf(" ") ;
pf("%.4lf",hypot(x,y)) ;
}
pf("\n") ;
}
return 0;
}
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