View Compilation Error

0_0_5399279_4344.cpp: In function `int isSave(int, int)':
0_0_5399279_4344.cpp:21: error: `n' undeclared (first use this function)
0_0_5399279_4344.cpp:21: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5399279_4344.cpp: In function `int BFS()':
0_0_5399279_4344.cpp:35: error: `k' undeclared (first use this function)
0_0_5399279_4344.cpp:45: error: `map[i][j]' cannot be used as a function
0_0_5399279_4344.cpp: In function `int main()':
0_0_5399279_4344.cpp:60: error: `n' undeclared (first use this function)
0_0_5399279_4344.cpp:60: error: `k' undeclared (first use this function)