刚学python，还是免不了C++的代码风格。

[Love Story](https://codeforces.com/contest/1829/problem/A)

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def solve():
    str = input()
    ans = 0
    for i in range(10):
        if(str[i] != std[i]):
            ans +=1
    print(ans)
###########
t = int(input())
std = "codeforces"
for i in range(t):
    solve()

[Blank Space](https://codeforces.com/contest/1829/problem/B)

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#python
t = int(input())
for i in range(t):
    n = int(input())
    a = map(int,input().split())
    temp = 0
    ans = -1
    for j in a:
        if j == 0:
            temp+=1
        else:
            temp = 0
        ans = max(ans,temp)
    print(ans)

[A. Plus or Minus](https://codeforces.com/contest/1807/problem/A)

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def solve():
    data = list(map(int,input().split()))
    if (data[0] + data[1]) == data[2]:
        print("+")
    else:
        print("-")
        
###########
t = int(input())
for i in range(t):
    solve()

[Grab the Candies](https://codeforces.com/contest/1807/problem/B)

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def solve():
    n = int(input())
    a = list(map(int,input().split()))
    mh = 0
    bika = 0
    for i in a:
        if(i % 2 == 0):
            mh+=i
        else:
            bika +=i
    if(mh > bika):
        print("YES")
    else:
        print("NO")
###########
t = int(input())
for i in range(t):
    solve()

[Is It a Cat?](https://codeforces.com/contest/1800/problem/A)

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def solve():
    n = int(input())
    str = input()
    sta = 'm'
    str = str.lower()
    ss = str[0]
    for i in range(1,n):
        if(str[i] != str[i-1]):
            ss += str[i]
    if(ss == "meow"):
        print("YES")
    else:
        print("NO")
        
###########
t = int(input())
for i in range(t):
    solve()

[A - YES or YES?](https://codeforces.com/contest/1703/problem/A)

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def solve():
    str = input()
    str = str.upper()
    if(str == "YES"):
        print("YES")
    else:
        print("NO")
            
###########
t = int(input())
for i in range(t):
    solve()

[B - ICPC Balloons](https://codeforces.com/contest/1703/problem/B)

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def solve():
    ok = []
    for i in range(26):
        ok.append(0)
    n = int(input())
    str = input()
    ans = 0
    for ch in str:
        if(ok[ord(ch) - ord('A')] == 0):
            ans += 2
            ok[ord(ch) - ord('A')] = 1
        else:
            ans +=1
    print(ans)        
###########
t = int(input())
for i in range(t):
    solve()