周练3

---

7-24 帅到没朋友

没注意要%05d  错了很久 其他很快打完

#include <bits/stdc++.h>

using namespace std;



int main()
{
map<int,int>ma;
int n;cin>>n;
for(int i=1;i<=n;i++ )
{
    int k;cin>>k;
    if(k==1){int x;cin>>x;continue;}

    while(k--)
    {
        int x;cin>>x;
        ma[x]=1;

    }


}
int k;cin>>k;
int first=1;
while(k--)
{
    int x;cin>>x;
    if(ma[x]!=1&&first){first=0;printf("%05d",x);ma[x]=1;}
    else  if(ma[x]!=1&&first==0) {printf(" %05d",x);ma[x]=1;}

}

if(first)printf("No one is handsome");







return 0;
}

---

7-27 输出GPLT

非常水的20分

#include <bits/stdc++.h>

using namespace std;


int a[200]={0};
int main()
{
string s;
getline(cin,s);
for(int i=0;i<s.size();i++)
{

    if(s[i]=='G'||s[i]=='g')a['G']++;
     if(s[i]=='P'||s[i]=='p')a['P']++;
 if(s[i]=='L'||s[i]=='l')a['L']++;
  if(s[i]=='T'||s[i]=='t')a['T']++;
}
int f=1;
while(f)
{
    f=0;
    if(a['G']>0){f=1;a['G']--;printf("%c",'G');}
     if(a['P']>0){f=1;a['P']--;printf("%c",'P');}
     
       if(a['L']>0){f=1;a['L']--;printf("%c",'L');}
       if(a['T']>0){f=1;a['T']--;printf("%c",'T');}

}





return 0;
}

---

7-29 抢红包

主要是一个结构体的排序  1   bool cmp(struct ren a,struct ren b)  其中return a.s>b.s; 而不是 return a>b;   

                                         2  sort(a+1,a+1+n,cmp);   排序1到n    必须要加一

#include <bits/stdc++.h>

using namespace std;





struct ren
{
    int t;
    int num;
    double s;
}a[10005];

bool cmp(struct ren a,struct ren b)
{

if(a.s!=b.s)return a.s>b.s;
else if(a.num!=b.num)return a.num>b.num;
else return  b.t>a.t;

}
int main()
{
int n;
cin>>n;
for(int i=1;i<=n;i++)
{   a[i].t=i;
    int k;cin>>k;
    for(int j=1;j<=k;j++)
    {
        int n1,x;
        cin>>n1>>x;
        a[i].s-=x;
        a[n1].s+=x;
        a[n1].num++;

    }



}
sort(a+1,a+1+n,cmp);


for(int i=1;i<=n;i++)
{
    cout<<a[i].t<<" ";
    printf("%.2lf",a[i].s/100);
    cout<<endl;

}





return 0;
}

---

7-30 排座位 

 并查集简单问题

#include<iostream>
#include<cstring>
#include <bits/stdc++.h>
using namespace std;

int b[105]={0};
int a[105][105]={0};
int find1(int x);
void uni(int x,int y);
int main(){
   for(int i=1;i<=100;i++)
    b[i]=i;

   int n,k,q;
   cin>>n>>k>>q;
   for(int i=1;i<=k;i++)
   {
       int a1,a2,a3;
       cin>>a1>>a2>>a3;
       a[a1][a2]=a[a2][a1]=a3;
       if(a3==1)
         uni(a1,a2);

   }

   for(int i=1;i<=q;i++)
   {
       int x,y;cin>>x>>y;
       if(a[x][y]==1){printf("No problem
");continue;}
       if(a[x][y]==0){printf("OK
");continue;}
       if(a[x][y]==-1&&find1(x)==find1(y)){printf("OK but...
");continue;}
       if(a[x][y]==-1&&find1(x)!=find1(y))printf("No way
");



   }




    return 0;
}


int find1(int x)
{
    int j=x;
    while(b[j]!=j)
        j=b[j];

    int i=x;
    while(i!=j)
    {
        int t=b[i];
        b[i]=j;
        i=t;
    }
    return j;

}


void uni(int x,int y)
{
    int x1=find1(x);
    int y1=find1(y);
    if(x1!=y1)
        b[x1]=y1;


}