View Compilation Error

0_0_38801794_6353.cpp:3:8: error: 'N' was not declared in this scope
    3 | char s[N]={0};
      |        ^
0_0_38801794_6353.cpp: In function 'void getnums()':
0_0_38801794_6353.cpp:6:36: error: 's' was not declared in this scope; did you mean 'ts'?
    6 |     string ts;long long len=strlen(s);char c;
      |                                    ^
      |                                    ts
0_0_38801794_6353.cpp: In function 'void solve()':
0_0_38801794_6353.cpp:18:20: error: 's' was not declared in this scope
   18 |     getchar();gets(s);
      |                    ^