Rank Tên đăng nhập Điểm Bài tập Giới thiệu
10001 1401 1
10002 297 2
10003 2770 23
10004 4798 58
10005 0 0
10006 101 1
10006 101 1
10008 0 0
10009 1379 9
10010 5061 13
10011 101 1

include <bits/stdc++.h>

using namespace std;

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

10012 7424 16
10013 0 0
10014 2523 21
10015 3729 22
10016 0 0
10017 7900 15
10018 0 0
10019 2641 6
10020 392 2
10021 1001 1
10022 3484 3
10023 384 6
10024 180 1
10025 190 1

Hiiiiiiii

10026 90 1
10027 301 1
10028 101 1
10029 0 0
10030 197 2
10031 0 0
10032 1097 2
10033 0 0
10033 0 0
10033 0 0
10036 2716 26
10037 0 0
10038 301 1
10039 0 0
10039 0 0
10041 101 1
10042 0 0
10043 2984 31
10044 3122 2
10045 781 2
10046 2689 22
10047 2328 5
10048 601 1
10049 5039 39
10050 0 0
10051 2817 2
10052 0 0
10053 101 1
10054 6764 22
10055 17 1

tấm chiếu mới .-.

10056 0 0
10057 200 1
10057 201 1

:))))))))))))))))))))))))))

10059 0 0
10059 0 0
10061 301 1

include <bits/stdc++.h>

using namespace std;
int n, m, a[1000005], res, d[1000005];
int main() {
cin >> n >> m;
for ( int i = 1; i <= n; i++ ) {
cin >> a[i];
d[a[i]]++;
}
sort ( a + 1, a + 1 + n );
for ( int i = n; i >1; i-- ) {
res=res+ upper_bound ( a + 1, a + i, m - a[i] )-a-1;
}
cout<<res;
}

10062 190 1
10063 301 1

L

10064 0 0
10065 301 1
10066 0 0
10067 3907 4
10068 2756 12
10069 0 0
10070 649 5
10071 1641 13
10072 0 0
10072 0 0
10072 0 0

include<iostream>

using namespace std;

int main(){
int x;
cin >> x;
cout << "So gap doi la : " << 2 * x;
return 0;
}

10075 101 1
10076 0 0
10077 7805 21
10078
giorzang
Vũ Trường Giang
7217 8
10079 301 1
10080 506 6
10081 215 2
10082 1288 7
10083 1832 2
10084 0 0
10084 0 0
10086 8014 18
10087 0 0
10087 0 0
10087 0 0
10090 5103 35
10091 0 0
10092 587 2
10093 0 0
10094 3318 23
10095 0 0
10096 1075 5

hihi

10097 0 0
10098 1343 2
10099 8409 33
10100 0 0