답안 #68871 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
68871	2018-08-18T20:39:15 Z	alenam0161	커다란 상품 (IOI17_prize)	C++17	100 / 100	85 ms	7748 KB

prize

#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 3e5+7;
vector<int> ans[N];
int rs=-1;
int gdl,gdr;
vector<int> get(int x){
    if(ans[x].size()==0){
        ans[x]=ask(x);
        if(ans[x][0]==0&&ans[x][1]==0){
            rs=x;
            return ans[x];
        }
        if(ans[x][0]==0)gdl=max(gdl,x);
        if(ans[x][1]==0)gdr=min(gdr,x);
   // cout<<x<<" "<<ans[x][0]<<" "<<ans[x][1]<<endl;
    }
    return ans[x];
}
void fnd(int l,int r){
    if(rs!=-1)return;
    if(l==r){
        if(gdl<=l&&l<=gdr)
        get(l);
        return;
    }
    if(l+1==r){
        return;
    }
    int m=(l+r)/2;
    if(gdl>=m){
        fnd(m,r);
        return;
    }
    if(gdr<=m){
        fnd(l,m);
        return;
    }
    vector<int> lres=get(l);
    if(rs!=-1)return;
    vector<int> rres=get(r);
    if(rs!=-1)return;
    if(lres[0]==rres[0]&&lres[1]==rres[1])return;
    if(lres[1]==0||rres[0]==0)return;
    vector<int> md=get(m);
    if(rs!=-1)return;
    if(rand()&1){
        if(md[0]!=0)fnd(l,m);
        if(rs!=-1)return;
        if(md[1]!=0)fnd(m,r);
    }
    else{
        if(md[1]!=0)fnd(m,r);
        if(rs!=-1)return;
        if(md[0]!=0)fnd(l,m);
    }
}
int find_best(int n) {
    srand(6451719);
    gdl=-1;
    gdr=n;
    fnd(0,n-1);
    return rs;

    int i;
	for(i = 0; i < n; i++) {
		std::vector<int> res = get(i);
	//	cout<<i<<" ok "<<res[0]<<" "<<res[1]<<endl;
		if(res[0] + res[1] == 0)
			return i;
        int cur=i;
        int brd=20;
        if(res[0]+res[1]<n/2)brd=3;
        else brd=20;

        for(int j=brd;j>=0;j--){
            int rg=cur;
            rg+=1<<j;
            if(rg<n){
                vector<int> cres=get(rg);
              //  cout<<rg<<" "<<cur<<" "<<j<<" ok "<<cres[0]<<" "<<cres[1]<<endl;
                if(cres[0]+cres[1]==0)return rg;
                if(res[0]==cres[0]&&res[1]==cres[1]){
                    cur=rg;
                    continue;
                }
                if(cres[0]==0){
                    cur=rg;
                    continue;
                }
            }
        }
        i=cur;
	}
	return n-1;
}

Subtask #1
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	7416 KB	Output is correct
2	Correct	8 ms	7420 KB	Output is correct
3	Correct	9 ms	7428 KB	Output is correct
4	Correct	9 ms	7428 KB	Output is correct
5	Correct	9 ms	7428 KB	Output is correct
6	Correct	8 ms	7608 KB	Output is correct
7	Correct	8 ms	7608 KB	Output is correct
8	Correct	9 ms	7664 KB	Output is correct
9	Correct	8 ms	7664 KB	Output is correct
10	Correct	9 ms	7664 KB	Output is correct

Subtask #2
80.0 / 80.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	7736 KB	Output is correct
2	Correct	9 ms	7736 KB	Output is correct
3	Correct	9 ms	7736 KB	Output is correct
4	Correct	11 ms	7736 KB	Output is correct
5	Correct	9 ms	7736 KB	Output is correct
6	Correct	8 ms	7736 KB	Output is correct
7	Correct	10 ms	7736 KB	Output is correct
8	Correct	8 ms	7736 KB	Output is correct
9	Correct	8 ms	7736 KB	Output is correct
10	Correct	9 ms	7736 KB	Output is correct
11	Correct	14 ms	7736 KB	Output is correct
12	Correct	12 ms	7736 KB	Output is correct
13	Correct	9 ms	7736 KB	Output is correct
14	Correct	16 ms	7736 KB	Output is correct
15	Correct	14 ms	7736 KB	Output is correct
16	Correct	12 ms	7736 KB	Output is correct
17	Correct	37 ms	7744 KB	Output is correct
18	Correct	21 ms	7744 KB	Output is correct
19	Correct	35 ms	7744 KB	Output is correct
20	Correct	19 ms	7744 KB	Output is correct
21	Correct	35 ms	7744 KB	Output is correct
22	Correct	34 ms	7744 KB	Output is correct
23	Correct	11 ms	7744 KB	Output is correct
24	Correct	13 ms	7744 KB	Output is correct
25	Correct	20 ms	7744 KB	Output is correct
26	Correct	17 ms	7744 KB	Output is correct
27	Correct	10 ms	7744 KB	Output is correct
28	Correct	16 ms	7744 KB	Output is correct
29	Correct	10 ms	7744 KB	Output is correct
30	Correct	18 ms	7744 KB	Output is correct
31	Correct	24 ms	7744 KB	Output is correct
32	Correct	11 ms	7744 KB	Output is correct
33	Correct	10 ms	7744 KB	Output is correct
34	Correct	26 ms	7744 KB	Output is correct
35	Correct	11 ms	7744 KB	Output is correct
36	Correct	52 ms	7744 KB	Output is correct
37	Correct	11 ms	7744 KB	Output is correct
38	Correct	11 ms	7744 KB	Output is correct
39	Correct	27 ms	7744 KB	Output is correct
40	Correct	22 ms	7744 KB	Output is correct
41	Correct	18 ms	7744 KB	Output is correct
42	Correct	14 ms	7744 KB	Output is correct
43	Correct	16 ms	7748 KB	Output is correct
44	Correct	34 ms	7748 KB	Output is correct
45	Correct	43 ms	7748 KB	Output is correct
46	Correct	31 ms	7748 KB	Output is correct
47	Correct	52 ms	7748 KB	Output is correct
48	Correct	13 ms	7748 KB	Output is correct
49	Correct	32 ms	7748 KB	Output is correct
50	Correct	18 ms	7748 KB	Output is correct
51	Correct	30 ms	7748 KB	Output is correct
52	Correct	32 ms	7748 KB	Output is correct
53	Correct	8 ms	7748 KB	Output is correct
54	Correct	23 ms	7748 KB	Output is correct
55	Correct	46 ms	7748 KB	Output is correct
56	Correct	15 ms	7748 KB	Output is correct
57	Correct	10 ms	7748 KB	Output is correct
58	Correct	13 ms	7748 KB	Output is correct
59	Correct	18 ms	7748 KB	Output is correct
60	Correct	19 ms	7748 KB	Output is correct
61	Correct	28 ms	7748 KB	Output is correct
62	Correct	9 ms	7748 KB	Output is correct
63	Correct	9 ms	7748 KB	Output is correct
64	Correct	10 ms	7748 KB	Output is correct
65	Correct	10 ms	7748 KB	Output is correct
66	Correct	9 ms	7748 KB	Output is correct
67	Correct	9 ms	7748 KB	Output is correct
68	Correct	8 ms	7748 KB	Output is correct
69	Correct	10 ms	7748 KB	Output is correct
70	Correct	10 ms	7748 KB	Output is correct
71	Correct	61 ms	7748 KB	Output is correct
72	Correct	13 ms	7748 KB	Output is correct
73	Correct	52 ms	7748 KB	Output is correct
74	Correct	51 ms	7748 KB	Output is correct
75	Correct	11 ms	7748 KB	Output is correct
76	Correct	45 ms	7748 KB	Output is correct
77	Correct	63 ms	7748 KB	Output is correct
78	Correct	14 ms	7748 KB	Output is correct
79	Correct	23 ms	7748 KB	Output is correct
80	Correct	57 ms	7748 KB	Output is correct
81	Correct	85 ms	7748 KB	Output is correct
82	Correct	36 ms	7748 KB	Output is correct
83	Correct	10 ms	7748 KB	Output is correct
84	Correct	37 ms	7748 KB	Output is correct
85	Correct	56 ms	7748 KB	Output is correct
86	Correct	21 ms	7748 KB	Output is correct
87	Correct	9 ms	7748 KB	Output is correct
88	Correct	14 ms	7748 KB	Output is correct
89	Correct	10 ms	7748 KB	Output is correct
90	Correct	10 ms	7748 KB	Output is correct
91	Correct	10 ms	7748 KB	Output is correct
92	Correct	9 ms	7748 KB	Output is correct
93	Correct	12 ms	7748 KB	Output is correct
94	Correct	12 ms	7748 KB	Output is correct
95	Correct	14 ms	7748 KB	Output is correct
96	Correct	10 ms	7748 KB	Output is correct
97	Correct	10 ms	7748 KB	Output is correct

답안 #68871

Compilation message

Subtask #1 20.0 / 20.0

Subtask #2 80.0 / 80.0

Subtask #1
20.0 / 20.0

Subtask #2
80.0 / 80.0