turtle.cpp:22:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
22 | main(){
| ^
turtle.cpp: In function 'int main()':
turtle.cpp:13:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
13 | #define scan3(a,b,c) scanf("%lld %lld %lld",&a,&b,&c);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
turtle.cpp:24:5: note: in expansion of macro 'scan3'
24 | scan3(n,m,k)
| ^~~~~
turtle.cpp:12:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
12 | #define scan2(a,b) scanf("%lld %lld",&a, &b);
| ~~~~~^~~~~~~~~~~~~~~~~~~~
turtle.cpp:25:5: note: in expansion of macro 'scan2'
25 | scan2(t,mod)
| ^~~~~
turtle.cpp:12:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
12 | #define scan2(a,b) scanf("%lld %lld",&a, &b);
| ~~~~~^~~~~~~~~~~~~~~~~~~~
turtle.cpp:28:9: note: in expansion of macro 'scan2'
28 | scan2(x,y)
| ^~~~~