timus online judge 1319. Hotel

A solution in c++

#include<bits/stdc++.h>

using namespace std;

/// Typedef
typedef long long ll;

#define sc1(a) scanf("%lld",&a)

ll arr[105][105];

int main()
{
    ll row, col = 0, tc, t = 1;

    sc1(tc);

    // tc *= tc;

    ll basicroe = 0, basiccol = col;
    ll currow = 0, curcol = col;


   for(ll i = tc-1; i >=0; i--){
       ll row = 0, col = i;

       while (row < tc && col < tc){
           arr[row][col] = t++;
           row++, col++;
       }
   }

    for(ll i = 1; i < tc; i++){
        ll row = i, col = 0;

        while (row < tc && col < tc){
            arr[row][col] = t++;
            row++, col++;
        }
    }

    for ( ll i = 0; i < tc; i++ ) {

        for ( ll j = 0; j < tc; j++ ) {
            cout << arr[i][j] << " ";
        }
       cout << endl;
    }

    return 0;
}