Language:C++ 4.8.2
#include<stdio.h> int main(void) { int v, t; while(scanf("%d%d", &v, &t) == 2) { printf("%d\n", 2*v*t); } return 0; }
UVA_10071:Back to High School Physics
原文：http://www.cnblogs.com/xpjiang/p/4358175.html
