样例能过 测试点0分，求助！

#include <iostream>
#include <cstring>
#include <cstdio>
using namespace std;
int main(){
	string op1,op2,tmp;
	int num;
	int n;
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>num>>op1>>tmp>>tmp>>op2;
		if(op1=="km" && op2=="m")cout<<num<<" "<<op1<<" = "<<num*1000<<" "<<op2; 
		else if(op1=="m" && op2=="mm")cout<<num<<" "<<op1<<" = "<<num*1000<<" "<<op2; 
		else if(op1=="km" && op2=="mm")cout<<num<<" "<<op1<<" = "<<num*1000000<<" "<<op2; 
		else if(op1=="kg" && op2=="g")cout<<num<<" "<<op1<<" = "<<num*1000<<" "<<op2; 
		else if(op1=="g" && op2=="mg")cout<<num<<" "<<op1<<" = "<<num*1000<<" "<<op2; 
		else if(op1=="kg" && op2=="mg")cout<<num<<" "<<op1<<" = "<<num*1000000<<" "<<op2; 
	}
	
	
	
	return 0;
}