Type an input and write what you think is the output . Each problem is converted to Web Assembly, so any possible input will show the corresponding output. Only correct predictions count.
Locked until you have predicted 3 outputs correctly.
| 1 | bool solution(const vector<int>& nums) { |
| 2 | |
| 3 | int total = 0; |
| 4 | |
| 5 | for (int x : nums) { |
| 6 | total += x; |
| 7 | } |
| 8 | |
| 9 | if (total % 2 != 0) { |
| 10 | return false; |
| 11 | } |
| 12 | |
| 13 | int half = total / 2; |
| 14 | |
| 15 | vector<bool> reachable(half + 1, false); |
| 16 | reachable[0] = true; |
| 17 | |
| 18 | for (int x : nums) { |
| 19 | for (int sum = half; sum >= x; sum--) { |
| 20 | |
| 21 | if (reachable[sum - x]) { |
| 22 | reachable[sum] = true; |
| 23 | } |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | return reachable[half]; |
| 28 | } |
Names have been stripped. The signature is the only clue you get for free. Compiled as C++20 with the standard headers and using namespace std; already in scope.