HDU 4561 金山居 连续最大积

动态规划

#include<cstdio>#include<iostream>using namespace std;int main(){int t,n;int i;int num;int f=1;int ans;int max,min;scanf("%d",&t);while(t--){scanf("%d",&n);max=min=0;ans=0;for(i=0;i<n;i++){scanf("%d",&num);if(num==0)max=min=0;if(num==2){max++;if(min!=0)min++;}if(num==-2){int temp=min;if(max!=0)min=max+1;elsemin=1;if(temp!=0)max=temp+1;elsemax=0;}ans=(ans>max?ans:max);}printf("Case #%d: %d\n",f++,ans);}return 0;}