牛牛学数列(最简单算法)
#include<stdio.h>
int main()
{
int n=0,result=0;;
scanf("%d",&n);
if(n%2==0)
{
result=-n/2;
}
else{
result=(n+1)/2;
}
printf("%d",result);
return 0;
}
#include<stdio.h>
int main()
{
int n=0,result=0;;
scanf("%d",&n);
if(n%2==0)
{
result=-n/2;
}
else{
result=(n+1)/2;
}
printf("%d",result);
return 0;
}
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