10071-Back to High School Physics

<br /> /* <br /> "Back to High School Physics"<br /> Level:0.5<br /> Date:2006/10/3<br /> */<br /> <br /> #include <stdio.h><br /> main(){<br /> int v=0,t=0;<br /> while(scanf("%d %d",&v,&t)==2){<br /> printf("%d\n",v*2*t);<br /> }<br /> }<br />