弱弱的问一句，本蒟蒻的朴素代码哪错了``` #include<bits/stdc++.h> using namespace std; map<string,int> d={{"km",1000000},{"m",10},{"mm",1},{"kg",1000000},{"g",1000},{"mg",1}}; int main(){ int n; cin>>n; for(int i=0;i<n;i++){ string a,b; int x; a.resize(2); b.resize(2); scanf("%d %s = ?%s\n",&x,&a[0],&b[0]); cout<<x<<' '<<a<<" = "<<' '<<x*(d[a]/d[b])<<' '<<b<<endl; }

return 0;

}