ACM新生杯第三次周赛

 1 ZN的随机数
 2 
 3  1 #include <iostream>
 4  2 #include <set>
 5  3 using namespace std;
 6  4 
 7  5 int main() 
 8  6 {
 9  7     int n;
10  8     while (cin >> n)
11  9     {
12 10         set<int> s;
13 11         for (int i = 0, x; i < n; ++i)
14 12         {
15 13             cin >> x;
16 14             s.insert(x);
17 15         }
18 16         cout << s.size() << endl;
19 17         for (auto it : s)
20 18         {
21 19             cout << it << ' ';
22 20         }
23 21         cout << endl;
24 22     }
25 23 }

 1 1 #include <iostream>
 2  2 using namespace std;
 3  3 
 4  4 int main() 
 5  5 {
 6  6     string str;
 7  7     char ch;
 8  8     getline(cin, str); 
 9  9     cin >> ch;
10 10 
11 11     string str2; 
12 12     for (char c : str) 
13 13     { 
14 14         if (c != ch) 
15 15         { 
16 16             str2 += c;
17 17         }
18 18     }
19 19     cout << str2 << endl; 
20 20 }

 1 1 #include <iostream>
 2  2 using namespace std;
 3  3 
 4  4 void Char(string& a)
 5  5 {
 6  6     for (int i = 0; i < a.length(); i++) 
 7  7    {
 8  8         if (a[i] >= 'A' && a[i] <= 'Z') 
 9  9        {
10 10             if (a[i] == 'Z') 
11 11            {
12 12                 a[i] = 'a';
13 13                 continue;
14 14             }
15 15             a[i] += 1;
16 16         } 
17 17             else if (a[i] >= 'a' && a[i] <= 'z') 
18 18            {
19 19             if (a[i] == 'z') 
20 20             {
21 21                 a[i] = 'A';
22 22                 continue;
23 23             }
24 24             a[i] += 1;
25 25         }
26 26     }
27 27 }
28 28 
29 29 int main() 
30 30 {
31 31     string a;
32 32     cin >> a;
33 33     Char(a);
34 34     cout << a << endl;
35 35 }

 1 1 #include <iostream>
 2  2 using namespace std;
 3  3 
 4  4 void x(int n, char A, char B, char C) 
 5  5 {
 6  6     if (n == 1)
 7  7    {
 8  8         cout << 1 << ' ' << A << ' ' << C << endl;
 9  9         return;
10 10     }
11 11     x(n - 1, A, C, B);
12 12     cout << n << ' ' << A << ' ' << C << endl;
13 13     x(n - 1, B, A, C);
14 14 }
15 15 
16 16 int main() 
17 17 {
18 18     int n;
19 19     cin >> n;
20 20     x(n, 'A', 'B', 'C');
21 21 }