View Compilation Error

0_0_11890791_5587.cpp: In function `int main()':
0_0_11890791_5587.cpp:47: error: `n' undeclared (first use this function)
0_0_11890791_5587.cpp:47: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11890791_5587.cpp:49: error: `dp' undeclared (first use this function)
0_0_11890791_5587.cpp:52: error: `i' undeclared (first use this function)
0_0_11890791_5587.cpp:54: error: `a' undeclared (first use this function)
0_0_11890791_5587.cpp:54: error: `b' undeclared (first use this function)
0_0_11890791_5587.cpp:54: error: `c' undeclared (first use this function)
0_0_11890791_5587.cpp:61: error: `j' undeclared (first use this function)