Untitled

#include<stdio.h>
#include<string.h>
#include<math.h>
using namespace std;

long long int t,type,a,b,c;
char ary[10000];

long long int length(char *arr){
	return	strlen(arr);
}

double length(long long int a,long long int b){
	return sqrt(pow(a,2)+pow(b,2));
}

double length(long long int a,long long int b,long long int c){
	return sqrt(pow(a,2)+pow(b,2)+pow(c,2));
}

int main(){
	scanf("%lld",&t);
	while(t--){
		scanf("%lld",&type);
		if(type==1){
			scanf("%s",ary);
			printf("%lld\n",length(ary));
		}
		else if(type==2){
			scanf("%lld%lld",&a,&b);
			printf("%lf\n",length(a,b));
		}
		else{
			scanf("%lld%lld%lld",&a,&b,&c);
			printf("%lf\n",length(a,b,c));
		}
	}
}