UVA 11054 Wine trading in Gergovia(扫描)
来源:互联网 发布:淘宝请人代付退款 编辑:程序博客网 时间:2024/05/17 22:44
之前自己写了个超级麻烦的代码,思路是对的,但是代码太乱了,导致一直WA。
这题思路就是扫描吧,如果当前last不是0,那就一直要往下传。
<pre name="code" class="cpp">#include<cstdio>#include<cmath>#define rep(i,a,b) for(int i=(a);i<(b);i++)#define ss(x) scanf("%d",&x)long long abs(long long x) {return x>0?x:-x;}int main(){ int n,x; while(true) { ss(n);if(n==0) break; long long ans=0,last=0; rep(i,0,n){ ss(x); ans+=abs(last); last+=x; } printf("%lld\n",ans); } return 0;}
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