Das Blinkenlights && Run-Length Encoding, Run!

为了写题解，在此放上两个题的代码

B：

//#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef unsigned long long ull;
const int maxn = 1e5+50;
const ll INF = 2*1e18;

int main()
{
    int m,n,s;
    scanf("%d%d%d",&m,&n,&s);
    int t = __gcd(m,n);
    t = m*n/t;
    if(t <= s) printf("yes\n");
    else printf("no\n");
    return 0;
}

 

 

K：

//#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef unsigned long long ull;
const int maxn = 1e5+50;
const ll INF = 2*1e18;

int main()
{
    char op;
    string s;
    cin >> op >> s;
    if(op == 'E')
    {
        int cnt = 0;
        for(int i = 0; i < s.size(); i++)
        {
            if(i == 0)
            {
                cout << s[i];
                cnt = 1;
            }
            else if(s[i] != s[i-1])
            {
                cout << cnt;
                cnt = 1;
                cout << s[i];
            }
            else if(s[i] == s[i-1])
            {
                cnt++;
            }
        }
        cout << cnt << endl;
    }
    else if(op == 'D')
    {
        char tc;
        for(int i = 0; i < s.size(); i++)
        {
            if(isdigit(s[i]))
            {
                for(int j = 0; j < s[i]-'0'; j++)
                {
                    cout << tc;
                }
            }
            else tc = s[i];
        }
        cout <<endl;
    }
    return 0;
}