View Compilation Error

0_0_25862100_30586.cpp: In function 'int main()':
0_0_25862100_30586.cpp:80:13: error: 'a' was not declared in this scope
             a[i]=u, b[i]=v, c[i]=weight;
             ^
0_0_25862100_30586.cpp:80:21: error: 'b' was not declared in this scope
             a[i]=u, b[i]=v, c[i]=weight;
                     ^
0_0_25862100_30586.cpp:80:29: error: 'c' was not declared in this scope
             a[i]=u, b[i]=v, c[i]=weight;
                             ^