PAT (Advanced Level) 1025 PAT Ranking

answer

         Simulation of water problems.

Code

#include<bits/stdc++.h>
using namespace std;
struct node
{
    string name;
    int final_rank,loc_num,loc_rank,grade;
    node(string name,int loc_num,int grade)
    {
      this->name=name;
      this->loc_num=loc_num;
      this->grade=grade;
    }
    void paixu(int flag,int w)
    {
       flag==0?loc_rank=w:final_rank=w;
    }
    bool operator <(const node &n) const
    {
        if(grade!=n.grade)
            return grade>n.grade;
        else
            return name<n.name;
    }
};
vector<node> v;
int k;
void paixu(int s,int e,int flag);
int main()
{
    int i,j,n,grade,start=0;
    string name;
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
        scanf("%d",&k);
        for(j=0;j<k;j++)
        {   
            cin>>name>>grade;
            v.push_back(node(name,i,grade));
        }
        sort(v.begin()+start,v.begin()+start+k);
        paixu(start,start+k,0);
        start+=k;
    }

    sort(v.begin(),v.end());
    paixu(0,v.size(),1);

    printf("%d\n",v.size());
    for(i=0;i<v.size();i++)
        printf("%s %d %d %d\n",v[i].name.c_str(),v[i].final_rank,v[i].loc_num,v[i].loc_rank);
    system("pause");
    return 0;
}
void paixu(int s,int e,int flag)
{
    int i,pre_grade=-1,cnt=1,same=1;
    for(i=s;i<e;i++)
    {
        if(v[i].grade!=pre_grade)
        {
            v[i].paixu(flag,cnt);
            same=cnt;
        }
        else
        {
            v[i].paixu(flag,same);
        }
        cnt++;
        pre_grade=v[i].grade;
    }
}