Adjacent Replacements

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#include<bits/stdc++.h> using namespace std; int main(){ int n,a[1001]; cin>>n; int i; int flag=0; for(i=0;i<n;i++){ cin>>a[i]; if(!(a[i]&1)) a[i]--; if(!flag) {cout<<a[i];flag=1;} else cout<<" "<<a[i]; } return 0; }