oj.uz

Submission #582246

# Submission time Handle Problem Language Result Execution time Memory
582246 2022-06-23T14:39:18 Z Koosha_mv The Big Prize (IOI17_prize) C++14
100 / 100
 99 ms 5300 KB 
#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<x.F<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first

mt19937 rng(time(nullptr));

const int N=2e5+99;

int n,sum,mxc,ans=-1,fen[N];
vector<int> res;

void add(int x){
	for(x++;x<N;x+=(x&-x)){
		fen[x]++;
	}
}
int get(int x){
	int res=0;
	for(x++;x;x-=(x&-x)){
		res+=fen[x];
	}
	return res;
}
void solve(vector<int> vec,int cnt){
	//cout<<"Cnt "<<cnt<<endl;
	//dbgv(vec);
	if(cnt==0) return ;
	int mid;
	while(vec.size()){
		mid=int(vec.size())>>1;
		res=ask(vec[mid]);
		if(res[0]+res[1]==0){
			//cout<<"ans -> "<<vec[mid]<<endl;
			ans=vec[mid];
			add(vec[mid]);
		}
		if(res[0]+res[1]<mxc){
			cnt--;
			add(vec[mid]);
			vec.erase(vec.begin()+mid);
		}
		else{
			break;		
		}
	}
	if(vec.size()==0) return ;
	vector<int> lc,rc;
	int cntl,cntr,res0=res[0];
	f(i,0,mid) lc.pb(vec[i]);
	f(i,mid+1,vec.size()) rc.pb(vec[i]);
	cntl=res0-get(vec[mid]-1);
	cntr=cnt-cntl;
	solve(lc,cntl);
	solve(rc,cntr);

}
int find_best(int _n){
	n=_n;
	srand(time(NULL));
	uniform_int_distribution<int> rnd(0,n-1);
	f(i,0,155){
		int id=(1ll*rand()*rand()+rand())%n;
		res=ask(id);
		maxm(mxc,res[0]+res[1]);
	}
	vector<int> vec(n);
	iota(all(vec),0);
	solve(vec,mxc);
	//eror(ans);
	return ans;
}

Compilation message

prize.cpp: In function 'void solve(std::vector<int>, int)':
prize.cpp:9:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define f(i,a,b) for(int i=a;i<b;i++)
......
   69 |  f(i,mid+1,vec.size()) rc.pb(vec[i]);
      |    ~~~~~~~~~~~~~~~~~~          
prize.cpp:69:2: note: in expansion of macro 'f'
   69 |  f(i,mid+1,vec.size()) rc.pb(vec[i]);
      |  ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4284 KB Output is correct
2 Correct 7 ms 4292 KB Output is correct
3 Correct 5 ms 4260 KB Output is correct
4 Correct 5 ms 4260 KB Output is correct
5 Correct 3 ms 3116 KB Output is correct
6 Correct 5 ms 4292 KB Output is correct
7 Correct 4 ms 3112 KB Output is correct
8 Correct 6 ms 3144 KB Output is correct
9 Correct 5 ms 4300 KB Output is correct
10 Correct 5 ms 4300 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4280 KB Output is correct
2 Correct 6 ms 4388 KB Output is correct
3 Correct 8 ms 4264 KB Output is correct
4 Correct 6 ms 4256 KB Output is correct
5 Correct 4 ms 3120 KB Output is correct
6 Correct 4 ms 4332 KB Output is correct
7 Correct 4 ms 3104 KB Output is correct
8 Correct 4 ms 3148 KB Output is correct
9 Correct 4 ms 4264 KB Output is correct
10 Correct 5 ms 4248 KB Output is correct
11 Correct 12 ms 4772 KB Output is correct
12 Correct 15 ms 4764 KB Output is correct
13 Correct 13 ms 4700 KB Output is correct
14 Correct 11 ms 840 KB Output is correct
15 Correct 45 ms 5168 KB Output is correct
16 Correct 59 ms 5140 KB Output is correct
17 Correct 60 ms 5080 KB Output is correct
18 Correct 66 ms 5176 KB Output is correct
19 Correct 50 ms 5084 KB Output is correct
20 Correct 30 ms 2720 KB Output is correct
21 Correct 99 ms 5184 KB Output is correct
22 Correct 53 ms 5168 KB Output is correct
23 Correct 9 ms 4528 KB Output is correct
24 Correct 13 ms 4636 KB Output is correct
25 Correct 51 ms 5052 KB Output is correct
26 Correct 57 ms 5168 KB Output is correct
27 Correct 9 ms 4520 KB Output is correct
28 Correct 49 ms 5156 KB Output is correct
29 Correct 42 ms 5072 KB Output is correct
30 Correct 59 ms 5148 KB Output is correct
31 Correct 62 ms 5132 KB Output is correct
32 Correct 14 ms 4712 KB Output is correct
33 Correct 2 ms 336 KB Output is correct
34 Correct 33 ms 5180 KB Output is correct
35 Correct 12 ms 4504 KB Output is correct
36 Correct 65 ms 5096 KB Output is correct
37 Correct 15 ms 4608 KB Output is correct
38 Correct 12 ms 4492 KB Output is correct
39 Correct 62 ms 5176 KB Output is correct
40 Correct 56 ms 5072 KB Output is correct
41 Correct 64 ms 5148 KB Output is correct
42 Correct 55 ms 5096 KB Output is correct
43 Correct 64 ms 5148 KB Output is correct
44 Correct 55 ms 5288 KB Output is correct
45 Correct 54 ms 5120 KB Output is correct
46 Correct 59 ms 5104 KB Output is correct
47 Correct 57 ms 5140 KB Output is correct
48 Correct 71 ms 5164 KB Output is correct
49 Correct 43 ms 5172 KB Output is correct
50 Correct 59 ms 5076 KB Output is correct
51 Correct 57 ms 5216 KB Output is correct
52 Correct 63 ms 5132 KB Output is correct
53 Correct 13 ms 4472 KB Output is correct
54 Correct 35 ms 5180 KB Output is correct
55 Correct 64 ms 5092 KB Output is correct
56 Correct 54 ms 5176 KB Output is correct
57 Correct 57 ms 5096 KB Output is correct
58 Correct 62 ms 5140 KB Output is correct
59 Correct 66 ms 5156 KB Output is correct
60 Correct 66 ms 5156 KB Output is correct
61 Correct 11 ms 4516 KB Output is correct
62 Correct 11 ms 4508 KB Output is correct
63 Correct 9 ms 4468 KB Output is correct
64 Correct 9 ms 4384 KB Output is correct
65 Correct 7 ms 4392 KB Output is correct
66 Correct 8 ms 4252 KB Output is correct
67 Correct 9 ms 4288 KB Output is correct
68 Correct 7 ms 4304 KB Output is correct
69 Correct 10 ms 4264 KB Output is correct
70 Correct 7 ms 4252 KB Output is correct
71 Correct 55 ms 5148 KB Output is correct
72 Correct 13 ms 4676 KB Output is correct
73 Correct 52 ms 5300 KB Output is correct
74 Correct 50 ms 5148 KB Output is correct
75 Correct 9 ms 4420 KB Output is correct
76 Correct 52 ms 5172 KB Output is correct
77 Correct 57 ms 5164 KB Output is correct
78 Correct 14 ms 4676 KB Output is correct
79 Correct 32 ms 5084 KB Output is correct
80 Correct 48 ms 5180 KB Output is correct
81 Correct 50 ms 5232 KB Output is correct
82 Correct 48 ms 5172 KB Output is correct
83 Correct 10 ms 4420 KB Output is correct
84 Correct 28 ms 5148 KB Output is correct
85 Correct 54 ms 5212 KB Output is correct
86 Correct 27 ms 5052 KB Output is correct
87 Correct 16 ms 4620 KB Output is correct
88 Correct 25 ms 5096 KB Output is correct
89 Correct 31 ms 5152 KB Output is correct
90 Correct 10 ms 4420 KB Output is correct
91 Correct 29 ms 5116 KB Output is correct
92 Correct 24 ms 5132 KB Output is correct
93 Correct 13 ms 4604 KB Output is correct
94 Correct 21 ms 4588 KB Output is correct
95 Correct 15 ms 4592 KB Output is correct
96 Correct 11 ms 4632 KB Output is correct
97 Correct 5 ms 4268 KB Output is correct