hdu 5360 贪心

#include <cstdio>
#include <iostream>
#include <algorithm>
#include <queue>
#include <cmath>
#include <cstring>
#include <stack>
#include <set>
#include <map>
#include <vector>

using namespace std;
#define INF 0x2fffffff
#define LL long long
#define MAX(a,b) ((a)>(b))?(a):(b)
#define MIN(a,b) ((a)<(b))?(a):(b)
struct node{
    int x,y,i;
    bool operator < (const node& a)const{
        return y > a.y;
    }
};
node a[100005];
vector<node> vec[100005];
int main(){
    int t;
    cin >> t;
    while(t--){
        int n;
        cin >> n;

        for(int i = 0;i < n;i++){
            scanf("%d",&a[i].x);
        }
        for(int i = 0;i < n;i++){
            scanf("%d",&a[i].y);
            a[i].i = i+1; 
            vec[i].clear();
        }
        for(int i = 0;i < n;i++){
            vec[a[i].x].push_back(a[i]); 
        }
        int ans = 0;
        priority_queue<node,vector<node>,less<node> > que;
        queue<int> q;
        for(ans = 0;ans < n;ans++){
            int si = vec[ans].size();
            for(int j = 0;j < si;j++){
                que.push(vec[ans][j]);
            }
            if(que.empty()) break;
            node v = que.top();

            q.push(v.i);
            que.pop();
            while(!que.empty() && que.top().y <= (ans)){
                q.push(que.top().i);

                que.pop();              
            }
        }
        int flag = 0;
        printf("%d\n",ans);
        while(!q.empty()){
            if(flag == 0){
                flag = 1;
            }
            else{
                printf(" ");    
            }
            printf("%d",q.front());
            q.pop();
        }
        for(ans;ans<n;ans++){
            int si = vec[ans].size();
            for(int i = 0;i < si;i++){
                if(flag == 0){
                    flag = 1;
                }
                else{
                    printf(" ");
                }
                printf("%d",vec[ans][i].i);
            }
        }
        printf("\n");
    }
    return 0;
}

不会实现啊不会实现啊