HDU 5066 Harry And Physical Teacher(物理题)
and HDU Teacher Physical
2023-09-14 09:10:14 时间
HDU 5066 Harry And Physical Teacher
思路:利用物理里面的动量守恒公式。因为保证小车质量远大于小球。所以能够把小车质量当成无穷大带进去,得到答案为2 * v0 - v;
代码:
#include <cstdio> #include <cstring> #include <vector> using namespace std; typedef long long ll; int v, v0; int main() { while (~scanf("%d%d", &v, &v0)) { printf("%d\n", -v0 + 2 * v); } return 0; }
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