题目描述
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样例输出
#include <iostream> #include <cmath> using namespace std; const double PI=3.141592654; int alu(double x, double y) { double R2=x*x+y*y; double S=PI*R2*0.5; return (int)ceil(S/50.0); } int main() { int N; cin>>N; for(int i=1;i<=N;++i){ double x,y; cin>>x>>y; int cnt=alu(x,y); cout<<"Property "<<i<<": This property will begin eroding in year "<<cnt<<'.'<< endl; } cout<<"END OF OUTPUT."<<endl; return 0; }