#include <stdio.h>
int main(void) {
int A,B,C,D;
scanf("%d %d %d %d",&A
,&B
,&C
,&D
); if(B>C && D>A && (C+D)>(A+B) && C>=0 && D>=0 && A%2==0){
}else{
printf("Valores nao aceitos\n"); }
return 0;
}
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