题解 | #译码#

用string处理输出即可,这里其实就是一个10进制转换成26进制的问题

#define PII pair<int ,int>
#define endl '\n'

using namespace std;

int dx[]={0,0,1,-1},dy[]={1,-1,0,0};

string ss="aaa";

void solve()
{
	int n;
    cin>>n;
    int t=n/5;
    while(t--)
    {
        char c;
        int num=0;
        for(int i=1;i<=5;i++)
        {
            cin>>c;
            num=num*10+(c-'0');
        }
        int bai=0,shi=0,ge=0;
        ge=num%26;
        num/=26;
        shi=num%26;
        num/=26;
        bai=num%26;
        //cout<<bai<<" "<<shi<<" "<<ge<<" "<<endl;
        string k=ss;
        k[0]+=bai;
        k[1]+=shi;
        k[2]+=ge;
        cout<<k;
    }
    cout<<endl;
	return;
}

int main()
{
	ios::sync_with_stdio(0);
    cin.tie(0),cout.tie(0);
	int T=1;
	cin>>T;
	while(T--)
	{
		solve();
	}
	return 0;
}