BUCT_范文帝

Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Problem Description Derek and Alfia are good friends.Derek is Chinese,and Alfia is Austrian.This summer holiday,t

Problem Description Function Fx,yF_{x,y}satisfies: F1,1=F1,2=1F_{1,1}=F_{1,2}=1 F1,i=F1,i−1+2∗F1,i−2(i>=3)F_{1,i}=F_{1,i-1}+2*F_{1,i-2} (i>=3) Fi,j=∑j+N−

Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description Steph is extremely obsessed with “sequence problems” that are usually seen on magazines: Give