79 lines
1.6 KiB
C++
79 lines
1.6 KiB
C++
#include <bits/stdc++.h>
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using namespace std;
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#define ll long long
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#define endl '\n'
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ll pow(ll x,ll y,ll m=1e9+7){ll ans=1;x%=m;while(y){if(y&1)ans=(ans*x)%m;x=(x*x)%m;y>>=1;}return ans;}
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void solve()
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{
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int n;
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cin>>n;
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vector<int>v(n);
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for(auto &i:v) cin>>i;
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int prev=-1;
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for(int i=0; i<n; ++i)
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{
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if(v[i]==-1) continue;
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if(prev==-1)
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{
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for(int j=i-1; j>=0; --j)
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{
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if(v[j+1]>1) v[j]=v[j+1]/2;
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else v[j]=v[j+1]*2;
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}
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prev=i;
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continue;
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}
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int l=prev, r=i;
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while(r-l>1)
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{
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if(v[r]>v[l])
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{
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v[r-1]=v[r]/2;
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r--;
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}
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else
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{
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if(v[l]>1) v[l+1]=v[l]/2;
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else v[l+1]=v[l]*2;
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l++;
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}
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}
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prev=i;
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}
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if(prev<n-1)
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{
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if(prev==-1)
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{
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v[0]=1;
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prev=0;
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}
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for(int i=prev+1; i<n; ++i)
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{
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if(v[i-1]>1) v[i]=v[i-1]/2;
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else v[i]=v[i-1]*2;
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}
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}
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for(int i=0; i<n-1; ++i)
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{
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if(v[i]!=v[i+1]/2 && v[i+1]!=v[i]/2)
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{
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cout<<-1<<endl;
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return;
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}
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}
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for(auto i:v) cout<<i<<" ";
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cout<<endl;
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}
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signed main()
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{
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ios_base::sync_with_stdio(false), cin.tie(nullptr);
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int TCS = 1;
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cin >> TCS;
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for (int TC = 1; TC <= TCS; ++TC)
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{
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// cout<<"Case "<<TC<<": ";
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solve();
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}
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} |