第一题
n = int(input())
for i in range(n):
s = input()
t1= 1
s1=‘‘
k = 0
s1+=s[0]
t0=0
for j in range(1,len(s)):
if s[j]==s1[k] and t0<2 and t1<2:
s1+=s[j]
k+=1
t1+=1
# continue
elif s[j]==s1[k] and t0>=2 and t1 == 1:
continue
elif s[j]==s1[k] and t1>=2:
continue
else:
s1+=s[j]
k+=1
t0 = t1
t1 = 1
print(s1)
4
n = int(input())
m = int(input())
for i in range(n):
re=[]
nums=[]
max1 =0
cur=[]
for j in range(m):
k = list(map(int,input().split()))
n1 = k[0]
for t in range(n1):
if [k[t*2+1],k[t*2+2]] not in re:
re.append([k[t*2+1],k[t*2+2]])
nums.append(1)
cur.append(j)
else:
if cur[re.index([k[t*2+1],k[t*2+2]])] ==j-1:
nums[re.index([k[t*2+1],k[t*2+2]])]+=1
else:
max1 = max(max1,nums[re.index([k[t*2+1],k[t*2+2]])])
nums[re.index([k[t*2+1],k[t*2+2]])] =1
cur[re.index([k[t*2+1],k[t*2+2]])] = j
print(max(max1,max(nums)))
6
Z国的货币系统包含面值1元、4元、16元、64元共计4种硬币，以及面值1024元的纸币。现在小Y使用1024元的纸币购买了一件价值为的商品，请问最少他会收到多少硬币？
n = int(input())
a=[1,4,16,64,1024]
s=0
j = len(a)-1
n = 1024-n
while(n!=0):
t = n//a[j]
n = n%a[j]
#print(a[j],t)
s+=t
j-=1
print(s)
7
n= int(input())
a = list(map(int,input().split()))
j = 0
t=[0]*n
if a[0]%2==0:
e =a[0]//2
else:
e =a[0]//2+1
while True:
k=e
j=0
while j<len(a) and k>=0:
k = 2*k-a[j]
j+=1
if j==len(a) and k>=0:
break
e+=1
print(e)
原文：https://www.cnblogs.com/SuckChen/p/13197136.html