UVA 11078 Open Credit System(空间优化+时间优化)
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优化后的版本,空间复杂度O(1),时间复杂度O(n)。
//// main.cpp// Richard//// Created by 邵金杰 on 16/9/30.// Mail:1016427040@qq.com or jasonshaosjj@gmail.com// Copyright © 2016年 邵金杰. All rights reserved.//#include<iostream>#include<cstdio>#include<cstring>#include<algorithm>using namespace std;int main(){ int t; scanf("%d",&t); while(t--) { int n; scanf("%d",&n); int x,ans,maxv; scanf("%d",&x); ans=-99999999; maxv=x; for(int i=1;i<n;i++){ scanf("%d",&x); ans=max(ans,maxv-x); maxv=max(maxv,x); } printf("%d\n",ans); } return 0;}
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