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- #include <iostream>
- #include <bitset>
- using namespace std;
- long long n,m,k;
- int main()
- {
- cin>>n>>m>>k;
- std::bitset<64>b(m);
- long long poz;
- for(long long i=63;i>=0;--i)
- if(b[i])
- {
- poz=i;
- break;
- }
- for(long long i=k;i<=poz+k;++i)
- {
- n=(n&~(1LL<<i));
- }
- long long s=(m<<k);
- cout<<(n|s);
- return 0;
- }
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