/in/foo.cc: In function 'int main()':
/in/foo.cc:53:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     cin >> str+1;
            ~~~^~
/in/foo.cc:54:25: error: 'strlen' was not declared in this scope
     int n = strlen(str+1);
                         ^
/in/foo.cc:56:33: error: 'memset' was not declared in this scope
     memset(dp, -127/3, sizeof dp);
                                 ^