1063. 计算谱半径(20) PAT乙级

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#include<iostream>#include<math.h>#include<iomanip>using namespace std;int main(){    int N;    double a,b;    double max=0;    cin>>N;    while(N--){        cin>>a>>b;        double temp=sqrt(pow(a,2)+pow(b,2));        if(temp>max){            max=temp;        }    }    //max+=0.005;    cout<<fixed<<setprecision(2)<<max;}