题解 100% AC

#include<bits/stdc++.h>
using namespace std;
int main(){
    int T;cin>>T;
    while(T--){
    	int n,k=0;
    	char s,s1;
    	string d,d1;
    	cin>>n>>d>>s>>s1>>d1;
    	if(d=="km"&&d1=="mm")k=n*1000000;
    	else if(d=="km"&&d1=="m")k=n*1000;
    	else if(d=="m"&&d1=="mm")k=n*1000;
    	else if(d=="kg"&&d1=="g")k=n*1000;
    	else if(d=="kg"&&d1=="mg")k=n*1000000;
    	else if(d=="g"&&d1=="mg")k=n*1000;
    	cout<<n<<" "<<d<<" "<<s<<" "<<k<<" "<<d1<<endl;
	}
    return 0;
}