BC149 简写单词

BC149 简写单词

#include<iostream>
#include<string>

using namespace std;
string s;
int main()
{
    while(cin>>s)
    {
        if(s[0]>='a'&&s[0]<='z') cout<<char(s[0]-32);
        else cout<<s[0];
    }
    return 0;
}

---

dd爱框框

dd爱框框

# define _CRT_SECURE_NO_WARNINGS
#include<iostream>

using namespace std;

const int N = 1e7 + 5;
int n, x;
int a[N];

int main()
{
    cin >> n >> x;
    for (int i = 1; i <= n; i++) cin >> a[i];
    int anslen = 0x3f3f3f3f, left = 0, right = 0,sum=0;
    int retleft = -1, retright = -1;
    while (right <= n)
    {
        sum += a[right];
        while (sum >= x)
        {
            if (right - left + 1 < anslen)
            {
                retleft = left;
                retright = right;
                anslen = right - left + 1;
            }
            sum -= a[left++];
        }
        right++;
    }
    cout << retleft << " " << retright << endl;
    return 0;
}

---

除2！

除2！

#include<iostream>
#include<queue>

using namespace std;

typedef long long ll;

ll n, k;
priority_queue<ll> heap;

int main()
{
    cin >> n >> k;
    ll x, sum = 0;
    while (n--)
    {
        cin >> x;
        sum += x;
        if (x % 2 == 0) heap.push(x);
    }
    while (heap.size() && k--)
    {
        ll t = heap.top() / 2;
        heap.pop();
        sum -= t;
        if (t % 2 == 0) heap.push(t);
    }
    cout << sum << endl;
    return 0;
}