一个新ACMer的刷题记录捏（Round.694） codeforces ABC

A. Strange Partition

Problem - A - Codeforces   2022-12-15 14:00:52

​
#include <bits/stdc++.h>
#define int long long 
const int N=100010;


using namespace std;
int a[N];

signed main()
{
    int t;
    cin>>t;
    while(t--)
    {
        int n,k;
        cin>>n>>k;
        double sum = 0;
        double sum1 = 0;
        for(int i=1;i<=n;i++)
        {
            cin>>a[i];
            sum += a[i] * 1.0;
            sum1 += ceil((double)a[i] / k);
        }
        printf("%.0lf %.0lf",(double)ceil(sum / k),sum1);
        printf("\n");
    }
    return 0;
    
}

​

 

B. Strange List

Problem - B - Codeforces   2022-12-15 14:27:52

#include <bits/stdc++.h>
#define int long long 
const int N=100010;


using namespace std;
int a[N];



signed main()
{
    int t;
    cin>>t;
    while(t--)
    {
        int n,k;
        cin>>n>>k;
        int sum = 0;
        int idx = 1;
        int res = 0x3f3f3f3f;
        for(int i=0;i<n;i++)
        {
            int cnt = 0;
            cin>>a[i];
            for(int j = k;;j *= k)
            {
                if(a[i] % j == 0)
                {
                    cnt++;
                }
                else
                {
                    break;
                }
            }
            if(res > cnt)
            {
                res = cnt;
                idx = i;
                
            }
            
        }
        
        for(int i=0;i<idx;i++)
        {
            sum += (res + 2) * a[i];
        }
        for(int i=idx;i<n;i++)
        {
            sum += (res + 1) * a[i];
        }
        cout<<sum<<"\n";
        
    }
    return 0;
    
}

C. Strange Birthday Party

Problem - C - Codeforces   2022-12-15 15:23:50

#include <bits/stdc++.h>
#define int long long 
const int N=1000010;


using namespace std;

int a[N];
int b[N];
void solve()
{
    int n,m;
    cin>>n>>m;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
    }
    for(int i=1;i<=m;i++)
    {
        cin>>b[i];
        
    }
    sort(a+1,a+1+n);
    int ans = 0;
    int idx = 1;
    for(int i = n;i >= 1;i -- )
    {
        if(a[i] > idx)
        {
            ans += b[idx ++];
        }
        else
        {
            ans += b[a[i]];
        }
    }
    cout<<ans<<"\n";
}
signed main()
{
    int t;
    cin>>t;
    while(t--)
    {
        solve();
        
    }
    return 0;
    
}