View Compilation Error

0_0_16831680_18413.cpp: In function 'int main()':
0_0_16831680_18413.cpp:39:25: error: redeclaration of 'int temp'
                     int temp=gcd(a[i],j);
                         ^
0_0_16831680_18413.cpp:38:25: note: 'int temp' previously declared here
                     int temp=g[a[i]][j];      //  打表更好；
                         ^