#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ double a,t,g; a=9.8; cout<<a*5<<endl; cout<<a*10<<endl; cout<<a*15<<endl; return 0; }