kangaroo.cpp: In function 'll f(int, int)':
kangaroo.cpp:19:6: warning: unused variable 'ks' [-Wunused-variable]
int ks = i > cs;
^~
kangaroo.cpp:20:6: warning: unused variable 'kf' [-Wunused-variable]
int kf = i > cf;
^~
kangaroo.cpp: In function 'int main()':
kangaroo.cpp:38:24: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
printf("%d\n", f(0, 0));
~~~~~~~^
kangaroo.cpp:35:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d %d", &n, &cs, &cf);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~