Main.c: In function 'main':
Main.c:3:5: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
3 | scanf("%lld%lld%lld",&N,&OX,&OY);N--;
| ^~~~~
Main.c:3:5: warning: incompatible implicit declaration of built-in function 'scanf'
Main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
+++ |+#include <stdio.h>
1 | long long N,A,B,C,R,T,X,Y,OX,OY;
Main.c:19:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
19 | if(A*C<0)A=-A;if(A==0||C==0)printf("-1");else printf("%lld",A*C);
| ^~
Main.c:19:19: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
19 | if(A*C<0)A=-A;if(A==0||C==0)printf("-1");else printf("%lld",A*C);
| ^~
Main.c:19:33: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
19 | if(A*C<0)A=-A;if(A==0||C==0)printf("-1");else printf("%lld",A*C);
| ^~~~~~
Main.c:19:33: warning: incompatible implicit declaration of built-in function 'printf'
Main.c:19:33: note: include '<stdio.h>' or provide a declaration of 'printf'
Main.c:19:51: warning: incompatible implicit declaration of built-in function 'printf'
19 | if(A*C<0)A=-A;if(A==0||C==0)printf("-1");else printf("%lld",A*C);
| ^~~~~~
Main.c:19:51: note: include '<stdio.h>' or provide a declaration of 'printf'