ssh myserver
cd homework
mkdir lesson_5
cd lesson_5

git clone git@git.acwing.com:yxc/homework.git

git merge dev  # 将dev分支合并到当前分支

vim readme.txt

***
111
333
555
444
***

git add .
git commit -m "fix conflicts"

git checkout master  # 切换回master分支

vim readme.txt

***
111
333
555
***

git add .
git commit -m "add 555"

git checkout -b dev
vim readme.txt
***
111
333
444
***

git add .
git commit -m "add 444"

git push origin dev

git remote add origin git@git.acwing.com:yxc/homework.git
git push -u origin master

rm problem2 -r
mkdir problem3
cd problem3
vim main.cpp
***
#include <iostream>

using namespace std;

const int N = 1010;

int n, m;
int f[N];

int main()
{
    cin >> n >> m;

    while (n -- )
    {
        int v, w;
        cin >> v >> w;
        for (int j = v; j <= m; j ++ )
            f[j] = max(f[j], f[j - v] + w);
    }

    cout << f[m] << endl;
    return 0;
}
***

cd ..
vim readme.txt
***
111
333
***

git add .
git commit -m "many operations"

mkdir problem1 problem2
cd problem1
vim main.cpp
***
#include <iostream>

using namespace std;

int main()
{
    int a, b;
    cin >> a >> b;
    cout << a + b << endl;
    return 0;
}
***
cd ../problem2
vim main.cpp
***
#include <iostream>

using namespace std;

const int N = 1010;

int n, m;
int f[N];

int main()
{
    cin >> n >> m;
    while (n -- )
    {
        int v, w;
        cin >> v >> w;
        for (int j = m; j >= v; j -- )
            f[j] = max(f[j], f[j - v] + w);
    }

    cout << f[m] << endl;

    return 0;
}
***
cd ..
git add .
git commit -m "add problem1 problem2"

vim readme.txt
***
111
222
***
git add .
git commit -m "add 222"

vim readme.txt
***
111
***
git add .
git commit -m "add readme.txt"

mkdir homework
cd homework
git init