Rank Tên đăng nhập Điểm Bài tập ▾ Giới thiệu
18901 101 1
18902 351 1
18903 101 1
18903 101 1
18903 101 1
18906 301 1
18907 101 1
18907 101 1
18909 30 1
18910 301 1
18911 101 1
18912 60 1
18913 201 1
18914 151 1
18915 630 1
18916 533 1
18917 50 1
18918 101 1
18919 20 1
18920 1601 1
18921 336 1
18922 201 1
18922 201 1
18924 1601 1
18925 201 1
18926 351 1
18927 85 1
18928 150 1
18929 101 1
18929 101 1
18929 101 1
18932 20 1
18933 101 1
18934 60 1
18935 301 1
18936 4 1
18937 101 1
18937 101 1
18939 801 1
18940 180 1
18941 101 1
18942 201 1
18943 101 1
18944 201 1
18944 201 1
18944 201 1
18944 201 1
18944 201 1
18949 401 1
18950 101 1
18950 101 1
18952 201 1
18953 92 1
18954 301 1
18955 201 1
18956 1401 1
18957 2001 1
18958 301 1
18958 301 1
18960 101 1
18960 101 1
18962 467 1

no

18963 101 1
18964 175 1
18965 60 1
18966 86 1
18967 171 1
18968 112 1
18969 201 1
18970 401 1
18971 101 1
18972 300 1
18973 401 1
18974 301 1
18975 810 1
18976 1601 1
18977 880 1
18978 40 1
18979 20 1
18980 201 1
18981 251 1
18982 101 1
18983 16 1
18984 336 1
18985 1401 1
18986 101 1
18986 101 1
18986 101 1

include <bits/stdc++.h>

using namespace std;

int main()
{
int n;
cin >> n;
cout << 2*n;
}

18989 1001 1
18990 180 1
18991 190 1

Hiiiiiiii

18992 90 1
18993 301 1
18994 101 1
18995 301 1
18996 101 1
18997 601 1
18998 101 1
18999 17 1

tấm chiếu mới .-.

19000 200 1