poj 3154 Graveyard

#include <iostream>#include <cstdio>#include <cstring>#include <cmath>#define F 10000using namespace std;int main(){    int n,m;    while(~scanf("%d%d",&n,&m)){        double ans=0;        for(int i=1;i<n;i++){ double pos=(double)i/n*(n+m);//计算每个需要移动的雕塑的坐标 ans+=fabs(pos-floor(pos+0.5))/(n+m);//累加移动距离        }        printf("%.4lfn",ans*F);//等比例扩大坐标    }    return 0;}