欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

洛古最简单50题解(41-50)

程序员文章站 2024-02-05 22:01:40
做为一名新手,首先要过一过题,找找成就感。(大佬略过)。下面附上洛古最简单50题(大佬略过)。以及最麻烦 AC代码,至少AC了。 NO.41 P2676 超级书架 #include #include using namespace std; int main() { int i,n,b,ans,m;... ......

做为一名新手,首先要过一过题,找找成就感。(大佬略过)。下面附上洛古最简单50题(大佬略过)。以及最麻烦 ac代码,至少ac了

no.41 p2676 超级书架

#include<iostream>
#include<algorithm>
using namespace std;
int main()
{
    int i,n,b,ans,m;
    int a[100001];
    cin>>n>>b;
    for(int i=0;i<n;i++)
    {
        cin>>a[i];
    }
    sort(a,a+n);
    i=n;
    ans=0;
    m=0;
    while (m<b)
    {
        m+=a[i--];
        ++ans;
    }
    cout<<ans-1<<endl;
    return 0;
}

 

no.42 p2788 数学1(math1)- 加减算式

#include<iostream>
using namespace std;
int ans,t;
int main()
{
while(cin>>t) ans+=t;
cout<<ans;
return 0;
}

 

no.43 p2955 [usaco09oct]奇数偶数even odd

#include<iostream>
#include<cstring>
using namespace std;
int main()
{
    long long n,i;
cin>>n;
    string a;
for (i=1; i<=n; i++)
{
cin>>a;
if ((a[a.size()-1]-'0')%2==0)
{
        cout<<"even"<<endl;
        }
        else
        {
        cout<<"odd"<<endl;
        }
}
return 0;
}

 

no.44 p3150 pb的游戏(1)

#include<iostream>
using namespace std;
int main()
{
    int n,t;
    int a[100001];
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>t;
        if (t % 2 ==0)
        a[i]=1;
        else
        a[i]=0;
    }
    for (int i=1; i<=n;i++)
    {
        if (a[i]==1)
        cout<<"pb wins\n";
        else
        cout<<"zs wins\n";
    }
    return 0;
}

 

no.45 p3912 素数个数

#include<cmath>
#include<iostream>
using namespace std;
int main()
{
    int n;
    cin>>n;
}

 

no.46 p3954 成绩

#include<cstdio>
using namespace std;
int main()
{
    float a,b,c,n;
    scanf("%f%f%f",&a,&b,&c);
    n=a*0.2+b*0.3+c*0.5;
    printf("%.0f",n);
    return 0;
}

 

no.47 p4325 [coci2006-2007#1] modulo

//1:

#include<iostream>
using namespace std;
int main()
{
    int a[10],n=0;
for (int i=1;i<=10;i++)
{
    cin>>a[i];
    a[i]=a[i]%42;
    }
    for (int i=1;i<=10;i++)
    {
        for (int j=1;j<=10;j++)
        {
            if(a[i]==a[j] && i!=j)
            {
            a[i]=-1;
         }
        }
        if (a[i]!=-1)
        {
            n++;
        }
    }
    cout<<n<<endl;
}


//2:

#include<iostream>
using namespace std;
int main()
{
    int a[10],n=0;
for (int i=1;i<=10;i++)
{
    cin>>a[i];
    a[i]%=42;
        for (int j=1;j<=i;j++)
        {
         if(a[i]==a[j] && i!=j)
             {a[i]=-1;}
    }
    }
    for (int i=1;i<=10;i++)
        if (a[i]!=-1)
        {n++;}
    cout<<n<<endl;
}


//3:
#include<iostream>
using namespace std;
int main()
{
    int a[10],n=0;
for (int i=1;i<=10;i++)
{
     cin>>a[i];
    a[i]%=42;
        for (int j=1;j<=i;j++)
         if(a[i]==a[j] && i!=j) {a[i]=-1;}
        if (a[i]!=-1){n++;}
    }
    cout<<n<<endl;
}

 

no.48 p4413 [coci2006-2007#2] r2

#include<cstdio>
using namespace std;
int main()
{
float s,r1,r2;
    scanf("%f%f",&r1,&s);
    r2=(s-r1/2)*2;
    printf("%.0f",r2);
    return 0;
}

 

no.49 [洛古]t48131 【高精度】求n!的值

#include <bits/stdc++.h>
int n,a[100000],l1 =1;
void input_data()
{
scanf("%d",&n);
for (int i = 1; i <= 999;i++)
a[i] = 0;
a[1] = 1;
}
void get_ans()
{
for (int i = 1;i <= n;i++)
{
int x = 0;
for (int j = 1;j <= l1;j++)
{
a[j] = a[j] *i + x;
x = a[j] / 10;
a[j] = a[j] % 10;
}
while ( x > 0)
{
l1++;
a[l1] += x;
x = a[l1] / 10;
a[l1] = a[l1] % 10;
}
}
}
void output_ans()
{
for (int i = l1;i >= 1;i--)
printf("%d",a[i]);
}
int main()
{
input_data();
get_ans();
output_ans();
return 0;
}

 

no.50 ??

#include<bits/stdc++.h>
using namespace std;
???
int main(){
    --???????--
return 0;
}

第五十题,我故意设置了一个悬念,绝对不会告诉你,是因为之前把49数成了50

欢迎大家把自己的想法发给我:3503344701@qq.com.