View Compilation Error

0_0_30173395_21102.cpp: In function 'int dfs(int, int, int, int, bool)':
0_0_30173395_21102.cpp:36:18: error: a function-definition is not allowed here before '{' token
 int solve(int x) {
                  ^
0_0_30173395_21102.cpp:56:1: error: expected '}' at end of input
 }
 ^