运行 ID: 127925

Main.cc: In function ‘long long int find(long long int, long long int)’:
Main.cc:11:9: error: ‘s’ was not declared in this scope
     ans=s(n,m/2)%n;
         ^
Main.cc: In function ‘int main()’:
Main.cc:21:8: error: ‘s’ was not declared in this scope
   ans=(s(n,n-1)+1)%n;
        ^