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- #include <iostream>
- using namespace std;
- int main()
- {
- int n, x;
- cin >> n >> x;
- for(int i = 1; i <= n; i++) {
- if(i % 2 == 1) {
- x += 2;
- }
- else {
- x--;
- }
- if(x % 4 == 0) {
- x = -x;
- }
- }
- cout << x << endl;
- return 0;
- }
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