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#include<map>#include<set>#include<list>#include<cmath>#include<ctime>#include<deque>#include<queue>#include<stack>#include<string>#include<bitset>#include<cstdio>#include<limits>#include<vector>#include<climits>#include<cstring>#include<cstdlib>#include<fstream>#include<numeric>#include<sstream>#include<iostream>#include<algorithm>#include<unordered_map>usingnamespacestd;intmain(){intt;cin>>t;for(inta0=0;a0<t;a0++){longn;cin>>n;longlongintf1=1,f2=2,f=0,sum=0;while(f1<n){if(f1%2==0){sum+=f1;}f=f1+f2;f1=f2;f2=f;//cout << f1 << endl;}cout<<sum<<endl;}return0;}
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Project Euler #2: Even Fibonacci numbers
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