CodingSolutions/Cards For Friends.cpp at master · Ryuk07/CodingSolutions · GitHub

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Task: For the New Year, Polycarp decided to send postcards to all his n friends. He wants to make postcards with his own hands. For this purpose, he has a sheet of paper of size w×h

, which can be cut into pieces.

Polycarp can cut any sheet of paper w×h

that he has in only two cases:

    If w

is even, then he can cut the sheet in half and get two sheets of size w2×h
;
If h
is even, then he can cut the sheet in half and get two sheets of size w×h2

    ;

If w
and h

are even at the same time, then Polycarp can cut the sheet according to any of the rules above.

After cutting a sheet of paper, the total number of sheets of paper is increased by 1

.

Help Polycarp to find out if he can cut his sheet of size w×h
at into n

or more pieces, using only the rules described above.
Input

The first line contains one integer t
(1≤t≤104) — the number of test cases. Then t

test cases follow.

Each test case consists of one line containing three integers w
, h, n (1≤w,h≤104,1≤n≤109

) — the width and height of the sheet Polycarp has and the number of friends he needs to send a postcard to.
Output

For each test case, output on a separate line:

    "YES", if it is possible to cut a sheet of size w×h

into at least n

    pieces;
    "NO" otherwise.

You can output "YES" and "NO" in any case (for example, the strings yEs, yes, Yes and YES will be recognized as positive).
Example
Input
Copy

5
2 2 3
3 3 2
5 10 2
11 13 1
1 4 4

Output
Copy

YES
NO
YES
YES
YES

Note

In the first test case, you can first cut the 2×2
sheet into two 2×1 sheets, and then cut each of them into two more sheets. As a result, we get four sheets 1×1

. We can choose any three of them and send them to our friends.

In the second test case, a 3×3

sheet cannot be cut, so it is impossible to get two sheets.

In the third test case, you can cut a 5×10
sheet into two 5×5

sheets.

In the fourth test case, there is no need to cut the sheet, since we only need one sheet.

In the fifth test case, you can first cut the 1×4
sheet into two 1×2 sheets, and then cut each of them into two more sheets. As a result, we get four sheets 1×1

.


Solution:


    #include <bits/stdc++.h>

    using namespace std;
    using ll = long long;

    void solve() {
      int w, h, n;
      cin >> w >> h >> n;
      int res = 1;
      while (w % 2 == 0) {
        w /= 2;
        res *= 2;
      }
      while (h % 2 == 0) {
        h /= 2;
        res *= 2;
      }
      cout << (res >= n ? "YES\n" : "NO\n");
    }

    int main() {
      int t;
      cin >> t;
      while (t--) {
        solve();
      }
    }