/in/foo.cc: In function 'int main()':
/in/foo.cc:14:40: warning: format '%s' expects argument of type 'char*', but argument 4 has type 'int*' [-Wformat=]
     scanf("%d%d%s", &n, &m, &k, str + 1);
                                        ^
/in/foo.cc:14:40: warning: too many arguments for format [-Wformat-extra-args]