View Compilation Error

0_0_25091320_14578.cpp: In function 'int main()':
0_0_25091320_14578.cpp:103:18: error: 'T' was not declared in this scope
     scanf("%d", &T);
                  ^
0_0_25091320_14578.cpp:107:29: error: 'K' was not declared in this scope
         for (int i = 0; i < K; i ++) {
                             ^
0_0_25091320_14578.cpp:114:41: error: 'K' was not declared in this scope
         int src = n * (n - 1) / 2 + n + K, dst = src + 1;
                                         ^
0_0_25091320_14578.cpp:116:22: error: 'dst' was not declared in this scope
         netflow.init(dst + 5);
                      ^