CodeForces 596B Wilbur and Array
简单题,一个一个操作,最后就是答案。
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
using namespace std; long long a[+];
long long pre;
int n; int main()
{
scanf("%d",&n);
for(int i=;i<=n;i++) scanf("%lld",&a[i]);
pre=;
long long ans=;
for(int i=;i<=n;i++)
{
ans=ans+abs(a[i]-pre);
pre=a[i];
}
printf("%lld\n",ans);
return ;
}
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