Codeforces Round #606 (Div. 2, based on Technocup 2020 Elimination Round 4)

Codeforces Round #606 (Div. 2, based on Technocup 2020 Elimination Round 4)_第1张图片
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签到题,求出位数,然后9*(位数-1)+ 从位数相同的全一开始加看能加几次的个数
#include
 using namespace std;

 int main(int argc, char const *argv[])
 {
    int t;
    int y;
    cin>>t;
    int ans = 0;
    while(t--)
    {
        cin>>y;
        ans = 0;
        int weishu = 0;
        int temp = y;
        while(temp>0)
        {
            weishu++;
            temp/=10;
        }
        ans += (weishu-1)*9;
        temp = 1;
        for (int i = 1; i < weishu; ++i)
        {
            temp = temp*10+1;
        }
        for (int i = temp; i <= y; i += temp)
        {
            ans++;
        }
        cout<

Codeforces Round #606 (Div. 2, based on Technocup 2020 Elimination Round 4)_第2张图片
链接

思路,用堆来维护所有的偶数,每次取最大的来除以二,但是需要在处理的时候去重。用STL的优先队列就可
#include

using namespace std;

int main(int argc, char const *argv[])
{
    //数的数量啊
    //排序一波?
    priority_queue q;
    int t;
    cin>>t;
    while(t--)
    {
        int n;
        cin>>n;
        int num;
        int flag = 0;
        for (int i = 0; i < n; ++i)
        {
            cin>>num;
            if (!(num%2)) //不是奇数,插入就行
            {
                q.push(num);
                flag++;
            }
        }
        if(flag)
        {
            int top = q.top();
            int ans = 0;
            int cur = 0;
            q.pop();
            ans++;
            if (!((top/2)%2))
            {
                q.push(top/2);
            }
            while(!q.empty())
            {
                cur = q.top();
                //cout<

Codeforces Round #606 (Div. 2, based on Technocup 2020 Elimination Round 4)_第3张图片
Codeforces Round #606 (Div. 2, based on Technocup 2020 Elimination Round 4)_第4张图片
链接

思考一下,因为two和one,是可能出现连起来出现的,所以先扫描一遍所有的twone这种的,去掉中间的o,然后再扫描一次把剩下的one和two
去掉中间那个字母就行。
#include


using namespace std;
char s[150001];

int del[150001];
 int main(int argc, char const *argv[])
 {
    ios::sync_with_stdio(false);
    std::vector a;
    int t;
    cin>>t;
    while(t--)
    {
        cin>>s;
        int ans = 0;
        a.clear();
        //memset(del, 0, sizeof(del));
        int len = strlen(s);
        for (int i = 0; i < len; ++i)
        {
            del[i]=0;
        }
        for (int i = 2; i < len-2; ++i)
        {
            if (s[i]=='o')
            {
                    if (s[i-2]=='t'&&s[i-1]=='w'&&s[i+1]=='n'&&s[i+2]=='e')
                    {
                        //s.erase(i,1);
                        a.push_back(i+1);
                        del[i] = 1;
                        //cout<

未完待续~

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