View Compilation Error

0_0_16790293_15368.cpp: In function 'int main()':
0_0_16790293_15368.cpp:90:29: error: 'uu' was not declared in this scope
                             uu=in[u]-out[u];
                             ^
0_0_16790293_15368.cpp:91:29: error: 'vv' was not declared in this scope
                             vv=in[v]-out[v];
                             ^