Submission #367943

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
367943	2021-02-18T22:26:06 Z	Marlov	The Big Prize (IOI17_prize)	C++14	98.29 / 100	65 ms	912 KB

prize

/*
Code by @marlov       
*/
#include <iostream>
#include <fstream>
#include <string>
#include <sstream>
#include <vector>
#include <string>
#include <cmath>
#include <algorithm>
#include <iomanip>
#include <utility>
#include <set>
#include <unordered_set>
#include <map>
#include <unordered_map>
#include <stack>
#include <queue>
#include <iterator>
#include <bitset>
#include "prize.h"
using namespace std;
typedef long long ll;
typedef pair<int,int> ii;

int N;
int sN;
int mvs=0;
int result=-1;

/*
vector<int> ask(int i){
	cout<<"query: "<<i<<endl;
	int rlv,rrv;
	cin>>rlv>>rrv;
	return {rlv,rrv};
}
*/

unordered_map<int,int> lv;
unordered_map<int,int> rv;
vector<int> query(int i){
	if(!(lv.count(i)==1&&rv.count(i)==1)){
	vector<int> askv=ask(i);
	lv[i]=askv[0];
	rv[i]=askv[1];
	}
	if(lv[i]+rv[i]==0) result=i;
	return {lv[i],rv[i]};
}

void binary_search(int l,int r){
	//cout<<"seeing:"<<l<<","<<r<<endl;
	if(result!=-1) return;
	if(l+1>=r) return;
	vector<int> lv=query(l);
	vector<int> rv=query(r);
	int mid=(l+r)/2;
	vector<int> midv=query(mid);
	while(midv[0]+midv[1]<mvs){
		mid++;
		midv=query(mid);
	}
	if(mid==r) return;
	if(midv[0]-lv[0]!=0) binary_search(l,mid);
	if(rv[0]-midv[0]!=0) binary_search(mid,r);
}

//method can use int[] ask(int i) which return left and right value
int find_best(int n){
	int N=n;
	int sN=floor(sqrt((double)N));
	//loop first sqrtN value to find max dude
	for(int i=0;i<N;i+=sN){
		vector<int> qv=query(i);
		mvs=max(mvs,qv[0]+qv[1]);
	}
	//loop through sqrtN
	int cl=0;
	int cr=sN;
	vector<int> clv;
	vector<int> crv;
	while(cr<N){
		clv=query(cl);
		if(clv[0]+clv[1]<mvs){
			cl++;
			continue;
		}
		crv=query(cr);
		if(cr<N&&crv[0]+crv[1]<mvs){
			cr++;
			continue;
		}
		if(crv[0]-clv[0]!=0) binary_search(cl,cr);
		swap(cl,cr);
		cr=cl+sN;
	}
	cr=N-1;
	vector<int> lastV=query(cr);
	while(cr>cl&&lastV[0]+lastV[1]<mvs){
		cr--;
		lastV=query(cr);
	}
	if(lastV[0]-crv[0]!=0) binary_search(cl,cr);
	
	return result;
}


/*
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	int val=find_best(8);
	cout<<"ANSWER:"<<val<<endl;	
    return 0;
}
*/

/* stuff you should look for
	* int overflow, array bounds
	* special cases (n=1,n=0?)
	* do smth instead of nothing and stay organized
*/

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	364 KB	Output is correct
2	Correct	6 ms	512 KB	Output is correct
3	Correct	7 ms	364 KB	Output is correct
4	Correct	5 ms	492 KB	Output is correct
5	Correct	5 ms	620 KB	Output is correct
6	Correct	4 ms	364 KB	Output is correct
7	Correct	4 ms	364 KB	Output is correct
8	Correct	6 ms	364 KB	Output is correct
9	Correct	6 ms	364 KB	Output is correct
10	Correct	3 ms	408 KB	Output is correct

Subtask #2

78.29 / 80.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	524 KB	Output is correct
2	Correct	5 ms	364 KB	Output is correct
3	Correct	4 ms	492 KB	Output is correct
4	Correct	5 ms	492 KB	Output is correct
5	Correct	4 ms	524 KB	Output is correct
6	Correct	7 ms	364 KB	Output is correct
7	Correct	5 ms	364 KB	Output is correct
8	Correct	6 ms	364 KB	Output is correct
9	Correct	5 ms	364 KB	Output is correct
10	Correct	7 ms	364 KB	Output is correct
11	Correct	6 ms	364 KB	Output is correct
12	Correct	6 ms	364 KB	Output is correct
13	Correct	5 ms	548 KB	Output is correct
14	Correct	4 ms	364 KB	Output is correct
15	Correct	12 ms	492 KB	Output is correct
16	Correct	41 ms	748 KB	Output is correct
17	Correct	7 ms	364 KB	Output is correct
18	Correct	46 ms	876 KB	Output is correct
19	Correct	11 ms	364 KB	Output is correct
20	Correct	16 ms	492 KB	Output is correct
21	Correct	14 ms	576 KB	Output is correct
22	Correct	11 ms	364 KB	Output is correct
23	Correct	5 ms	364 KB	Output is correct
24	Correct	3 ms	524 KB	Output is correct
25	Correct	22 ms	492 KB	Output is correct
26	Correct	29 ms	620 KB	Output is correct
27	Correct	6 ms	364 KB	Output is correct
28	Correct	37 ms	876 KB	Output is correct
29	Correct	35 ms	620 KB	Output is correct
30	Correct	49 ms	748 KB	Output is correct
31	Correct	5 ms	364 KB	Output is correct
32	Correct	6 ms	548 KB	Output is correct
33	Correct	1 ms	492 KB	Output is correct
34	Correct	25 ms	492 KB	Output is correct
35	Correct	6 ms	364 KB	Output is correct
36	Correct	18 ms	492 KB	Output is correct
37	Correct	4 ms	400 KB	Output is correct
38	Correct	6 ms	364 KB	Output is correct
39	Correct	30 ms	492 KB	Output is correct
40	Correct	41 ms	748 KB	Output is correct
41	Correct	28 ms	620 KB	Output is correct
42	Correct	41 ms	620 KB	Output is correct
43	Correct	38 ms	620 KB	Output is correct
44	Correct	21 ms	620 KB	Output is correct
45	Correct	23 ms	620 KB	Output is correct
46	Correct	5 ms	364 KB	Output is correct
47	Correct	27 ms	492 KB	Output is correct
48	Correct	40 ms	784 KB	Output is correct
49	Correct	9 ms	364 KB	Output is correct
50	Correct	39 ms	792 KB	Output is correct
51	Correct	22 ms	620 KB	Output is correct
52	Correct	8 ms	416 KB	Output is correct
53	Correct	7 ms	364 KB	Output is correct
54	Correct	14 ms	620 KB	Output is correct
55	Correct	10 ms	368 KB	Output is correct
56	Partially correct	64 ms	880 KB	Partially correct - number of queries: 5085
57	Correct	39 ms	620 KB	Output is correct
58	Correct	65 ms	748 KB	Output is correct
59	Correct	39 ms	620 KB	Output is correct
60	Correct	39 ms	620 KB	Output is correct
61	Correct	8 ms	364 KB	Output is correct
62	Correct	8 ms	364 KB	Output is correct
63	Correct	9 ms	364 KB	Output is correct
64	Correct	7 ms	364 KB	Output is correct
65	Correct	5 ms	368 KB	Output is correct
66	Correct	17 ms	364 KB	Output is correct
67	Correct	7 ms	548 KB	Output is correct
68	Correct	9 ms	364 KB	Output is correct
69	Correct	13 ms	364 KB	Output is correct
70	Correct	9 ms	364 KB	Output is correct
71	Correct	52 ms	876 KB	Output is correct
72	Correct	9 ms	364 KB	Output is correct
73	Correct	60 ms	748 KB	Output is correct
74	Correct	58 ms	748 KB	Output is correct
75	Correct	5 ms	512 KB	Output is correct
76	Correct	54 ms	876 KB	Output is correct
77	Partially correct	43 ms	748 KB	Partially correct - number of queries: 5171
78	Correct	10 ms	364 KB	Output is correct
79	Correct	33 ms	492 KB	Output is correct
80	Correct	53 ms	792 KB	Output is correct
81	Partially correct	56 ms	880 KB	Partially correct - number of queries: 5129
82	Correct	64 ms	748 KB	Output is correct
83	Correct	6 ms	364 KB	Output is correct
84	Correct	43 ms	876 KB	Output is correct
85	Correct	48 ms	748 KB	Output is correct
86	Correct	59 ms	748 KB	Output is correct
87	Correct	15 ms	364 KB	Output is correct
88	Correct	40 ms	748 KB	Output is correct
89	Correct	54 ms	748 KB	Output is correct
90	Correct	10 ms	636 KB	Output is correct
91	Correct	40 ms	620 KB	Output is correct
92	Correct	48 ms	912 KB	Output is correct
93	Correct	52 ms	864 KB	Output is correct
94	Correct	61 ms	748 KB	Output is correct
95	Correct	65 ms	748 KB	Output is correct
96	Correct	43 ms	748 KB	Output is correct
97	Correct	42 ms	748 KB	Output is correct