B. Spreadsheets

B. Spreadsheets

#include<bits/stdc++.h>
using namespace std;
const int maxn=1e6+10;
#define ll long long
char a[maxn];
int temp[maxn];
char zimu[maxn],shuzi[maxn];
int main()
{
    int t;
    scanf("%d",&t);
    while(t--)
    {
        ll r,c;
        scanf("%s",a);
        if(sscanf(a,"R%lldC%lld",&r,&c)==2)
        {
            int cnt=0;
            while(c!=0)
            {
                temp[++cnt]=(c-1)%26;
                c=(c-1)/26;
            }
            for(int i=cnt; i>=1; i--)
                printf("%c",'A'+temp[i]);
            printf("%lld
",r);
        }
        else
        {
            int len=strlen(a);
            int cnt1,cnt2;
            cnt1=cnt2=0;
            for(int i=0; i<len; i++)
            {
                if(a[i]<='Z'&&a[i]>='A')
                    zimu[++cnt1]=a[i];
                else
                    shuzi[++cnt2]=a[i];
            }
            shuzi[++cnt2]='';
            printf("R%sC",shuzi+1);
            ll num=0;
            for(int i=1; i<=cnt1; i++)
            {
                num=num+zimu[i]-'A'+1;
//                printf("zimu%d
",zimu[i]-'A'+1);
                num=num*26;
            }
            num/=26;
            printf("%lld
",num);
        }
    }
}