View Compilation Error

0_0_9726395_23168.cpp: In function `int dfs(int, int)':
0_0_9726395_23168.cpp:42: error: `p' undeclared (first use this function)
0_0_9726395_23168.cpp:42: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9726395_23168.cpp:42: error: expected `]' at end of input
0_0_9726395_23168.cpp:42: error: expected `;' at end of input
0_0_9726395_23168.cpp:42: error: expected primary-expression at end of input
0_0_9726395_23168.cpp:42: error: expected `;' at end of input
0_0_9726395_23168.cpp:42: error: expected primary-expression at end of input
0_0_9726395_23168.cpp:42: error: expected `)' at end of input
0_0_9726395_23168.cpp:42: error: expected primary-expression at end of input
0_0_9726395_23168.cpp:42: error: expected `;' at end of input
0_0_9726395_23168.cpp:42: error: expected `}' at end of input