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View Compilation Error

0_0_20811894_17140.cpp:28:1: error: 'Followed' does not name a type
 Followed by:
 ^
0_0_20811894_17140.cpp: In function 'long long int gcd(long long int, long long int)':
0_0_20811894_17140.cpp:39:11: error: redefinition of 'long long int gcd(long long int, long long int)'
 long long gcd(long long a,long long b)
           ^
0_0_20811894_17140.cpp:3:11: note: 'long long int gcd(long long int, long long int)' previously defined here
 long long gcd(long long a,long long b)
           ^
0_0_20811894_17140.cpp: In function 'int main()':
0_0_20811894_17140.cpp:43:5: error: redefinition of 'int main()'
 int main()
     ^
0_0_20811894_17140.cpp:7:5: note: 'int main()' previously defined here
 int main()
     ^


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