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#include<bits/stdc++.h>
using namespace std;
int main(){
	char a;
	cin>>a;
	if(isupper(a)) cout<<'A';else cout<<'a';
	return 0;
}

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#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,k;
	cin>>n>>k;
	int a[n];
	for(int i=0;i<n;i++) cin>>a[i];
	sort(a,a+n);
	int ans = 0;
	for(int i=0;i<k;i++) ans+=a[i];
	cout<<ans<<endl;
	return 0;
}

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django-admin startproject mysite

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mysql -uroot -p123456;

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show databases；

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use XXX;

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select * from admin;

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select * from admin where id = 1;

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a = list(map(int , input().split()))
print(a.index(0) + 1)

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n , m = map(int , input().split())
print('Yes') if (m - 2 * n) % 2 == 0 and (m - 2 * n) >= 0 and 4 * n - m >= 0 and (4 * n - m) % 2 == 0 else print('No')

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x , n = map(int , input().split())
b = []
if n!=0:
    b = list(map(int,input().split()))
t = 0
ans = 0
while 1:
    if x-t not in b:
        ans = x - t
        break
    if x+t not in b:
        ans = x + t
        break
    t += 1
print(ans)

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pip freeze > requirement.txt

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pip install -r requirement.txt

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from flask import Flask

app = Flask(__name__)

@app.route('/')
def index():
    return 'hello world'

if __name__ == '__main__':
    app.run()