CCF 202009-2 风险人群筛查

#include <iostream>
#include <bits/stdc++.h>
#include <string>

using namespace std;

typedef struct
{
    int x;int y;
}XY;

XY xy1,xy2;
int k;//阈值
int across=0,stay=0;

bool inOrout(XY user)
{
    //if(xy1.x<=user.x&&user.x<=xy2.x
    //   &&xy1.y<=user.y&&user.y<=xy2.y)
    //   printf("in\n");
    return(xy1.x<=user.x&&user.x<=xy2.x
       &&xy1.y<=user.y&&user.y<=xy2.y);
}

void accumu(vector<XY> xy)
{
    bool flag0=false,flag1=false,flaglast;
    int constant=1;
    for(int i=0;i<xy.size();i++)
    {
       // printf("%d\n",constant);
        bool temp=inOrout(xy[i]);
        if(i==0)
        {
            if(temp)
                flaglast=true;
            else
                flaglast=false;
        }
        if(temp&&flag0==false)
        {
            flag0=true;
        }
        if(temp&&flaglast)
            constant++;
        if(temp&&i!=xy.size()-1)
            flaglast=true;
        else{
            flaglast=false;
            if(constant>=k){
                flag1=true;
                break;
            }else{
                constant=1;
            }
        }
    }
    if(flag0==true)
        across++;
    if(flag1==true)
        stay++;
    return;
}

int main()
{
    int number;
    int t;//t个坐标
    cin>>number>>k>>t>>xy1.x>>xy1.y>>xy2.x>>xy2.y;
    while(number--)
    {
        vector<XY> xy;
        XY temp;
        for(int i=0;i<t;i++)
        {
            cin>>temp.x>>temp.y;
            xy.push_back(temp);
        }
        accumu(xy);
    }
    if(k!=1)
        cout<<across<<endl<<stay<<endl;
    else
        cout<<across<<endl<<across<<endl;
}