View Compilation Error

0_0_2046108_16256.cpp:1: error: `elem_t' has not been declared
0_0_2046108_16256.cpp:1: error: `MAXN' was not declared in this scope
0_0_2046108_16256.cpp:1: error: `elem_t' has not been declared
0_0_2046108_16256.cpp:1: error: ISO C++ forbids declaration of `mat' with no type
0_0_2046108_16256.cpp:1: error: ISO C++ forbids declaration of `min' with no type
0_0_2046108_16256.cpp: In function `int bellman_ford(int, int, int*, int*)':
0_0_2046108_16256.cpp:2: error: `MAXN' undeclared (first use this function)
0_0_2046108_16256.cpp:2: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2046108_16256.cpp:4: error: `inf' undeclared (first use this function)
0_0_2046108_16256.cpp:4: error: `v' undeclared (first use this function)
0_0_2046108_16256.cpp:10: error: `mat' undeclared (first use this function)