View Compilation Error

0_0_29368427_16765.cpp: In function 'int solve(int)':
0_0_29368427_16765.cpp:36:12: error: 'i' was not declared in this scope
    if (tmp[i-1] == 4 || (tmp[i] == 6 && tmp[i-1] == 2))
            ^
0_0_29368427_16765.cpp:37:13: error: break statement not within loop or switch
             break;
             ^