Submission #715957

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
715957	2023-03-28T15:17:06 Z	myrcella	The Big Prize (IOI17_prize)	C++17	97.69 / 100	65 ms	428 KB

prize

//by szh
#include<bits/stdc++.h>
using namespace std;
 
#define fi first
#define se second
#define pii pair<int,int>
#define pll pair<long long,long long>
#define pb push_back
#define debug(x) cerr<<#x<<"="<<x<<endl
#define pq priority_queue
#define inf 0x3f
#define rep(i,a,b) for (int i=a;i<(b);i++)
#define MP make_pair
#define SZ(x) (int(x.size()))
#define ll long long
#define mod 1000000007
#define ALL(x) x.begin(),x.end()
void inc(int &a,int b) {a=(a+b)%mod;}
void dec(int &a,int b) {a=(a-b+mod)%mod;}
int lowbit(int x) {return x&(-x);}
ll p0w(ll base,ll p) {ll ret=1;while(p>0){if (p%2ll==1ll) ret=ret*base%mod;base=base*base%mod;p/=2ll;}return ret;}
#include "prize.h"
 
const int maxn = 2e5+10;
 
int ans;
set <int> pos;
vector <int> val;
int sum;
set <int> hi;
 
void solve(int l,int r,int pre,int suf) {
	if (l>r) return;
	int midl = l+r>>1;
	int midr = midl;
	vector <int> tmp = {-1,-1};
	while (midl>=l) {
		tmp = ask(midl);
		if (tmp[0]+tmp[1]==sum) break;
		if (tmp[0]+tmp[1]==0) {
			ans = midl;
			return;
		}
		pos.insert(midl);
		midl--;
	}
	if (midl<l) {
		midr++;
		while (midr<=r) {
			tmp = ask(midr);
			if (tmp[0]+tmp[1]==sum) break;
			if (tmp[0]+tmp[1]==0) {
				ans = midr;
				return;
			}
			pos.insert(midr);
			midr++;
		}
      	if (midr>r) return;
      	if (tmp[1]-suf>0) solve(midr+1,r,tmp[0],suf);
	}
	else {
      if (tmp[0]-pre>0) solve(l,midl-1,pre,tmp[1]);
      if (tmp[1]-(midr-midl)-suf>0) solve(midr+1,r,tmp[0]+midr-midl,suf);
    }
	return;
}
 
int find_best(int n) {
	int ed;
	rep(i,0,472) {
		vector <int> tmp = ask(i);
		if (tmp[0]+tmp[1]==0) return i;
		val.pb(tmp[0]+tmp[1]);
		hi.insert(val.back());
		ed = i;
		if (SZ(hi)==4) break;
	}
	
	sort(ALL(val));val.erase(unique(ALL(val)),val.end());
	sum=val.back();
	solve(ed+1,n-1,0,0);
	return ans;
}

Compilation message

prize.cpp: In function 'void solve(int, int, int, int)':
prize.cpp:35:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   35 |  int midl = l+r>>1;
      |             ~^~

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	208 KB	Output is correct
2	Correct	2 ms	348 KB	Output is correct
3	Correct	6 ms	288 KB	Output is correct
4	Correct	2 ms	344 KB	Output is correct
5	Correct	4 ms	288 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	5 ms	296 KB	Output is correct
8	Correct	4 ms	208 KB	Output is correct
9	Correct	5 ms	292 KB	Output is correct
10	Correct	6 ms	304 KB	Output is correct

Subtask #2

77.69 / 80.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	208 KB	Output is correct
2	Correct	5 ms	424 KB	Output is correct
3	Correct	6 ms	208 KB	Output is correct
4	Correct	6 ms	288 KB	Output is correct
5	Correct	4 ms	208 KB	Output is correct
6	Correct	0 ms	288 KB	Output is correct
7	Correct	4 ms	208 KB	Output is correct
8	Correct	5 ms	284 KB	Output is correct
9	Correct	3 ms	280 KB	Output is correct
10	Correct	5 ms	208 KB	Output is correct
11	Correct	9 ms	308 KB	Output is correct
12	Correct	10 ms	332 KB	Output is correct
13	Correct	7 ms	208 KB	Output is correct
14	Correct	15 ms	304 KB	Output is correct
15	Correct	34 ms	424 KB	Output is correct
16	Correct	49 ms	308 KB	Output is correct
17	Correct	4 ms	296 KB	Output is correct
18	Correct	37 ms	304 KB	Output is correct
19	Correct	4 ms	336 KB	Output is correct
20	Correct	40 ms	292 KB	Output is correct
21	Correct	52 ms	416 KB	Output is correct
22	Correct	31 ms	208 KB	Output is correct
23	Correct	9 ms	208 KB	Output is correct
24	Correct	4 ms	300 KB	Output is correct
25	Correct	39 ms	304 KB	Output is correct
26	Correct	48 ms	308 KB	Output is correct
27	Correct	8 ms	288 KB	Output is correct
28	Correct	25 ms	308 KB	Output is correct
29	Correct	34 ms	208 KB	Output is correct
30	Correct	39 ms	292 KB	Output is correct
31	Correct	6 ms	208 KB	Output is correct
32	Correct	9 ms	328 KB	Output is correct
33	Correct	0 ms	208 KB	Output is correct
34	Correct	33 ms	268 KB	Output is correct
35	Correct	7 ms	208 KB	Output is correct
36	Correct	43 ms	412 KB	Output is correct
37	Correct	11 ms	288 KB	Output is correct
38	Correct	6 ms	208 KB	Output is correct
39	Correct	33 ms	284 KB	Output is correct
40	Correct	38 ms	296 KB	Output is correct
41	Correct	65 ms	208 KB	Output is correct
42	Correct	44 ms	300 KB	Output is correct
43	Correct	40 ms	292 KB	Output is correct
44	Correct	39 ms	296 KB	Output is correct
45	Correct	58 ms	284 KB	Output is correct
46	Correct	5 ms	208 KB	Output is correct
47	Correct	37 ms	292 KB	Output is correct
48	Correct	20 ms	360 KB	Output is correct
49	Correct	42 ms	284 KB	Output is correct
50	Correct	58 ms	288 KB	Output is correct
51	Correct	58 ms	288 KB	Output is correct
52	Correct	52 ms	288 KB	Output is correct
53	Correct	5 ms	328 KB	Output is correct
54	Correct	44 ms	208 KB	Output is correct
55	Correct	4 ms	208 KB	Output is correct
56	Correct	51 ms	284 KB	Output is correct
57	Correct	59 ms	288 KB	Output is correct
58	Correct	49 ms	300 KB	Output is correct
59	Correct	29 ms	420 KB	Output is correct
60	Correct	45 ms	292 KB	Output is correct
61	Correct	5 ms	296 KB	Output is correct
62	Correct	4 ms	304 KB	Output is correct
63	Correct	4 ms	208 KB	Output is correct
64	Correct	3 ms	296 KB	Output is correct
65	Correct	5 ms	288 KB	Output is correct
66	Correct	9 ms	208 KB	Output is correct
67	Correct	5 ms	292 KB	Output is correct
68	Correct	5 ms	208 KB	Output is correct
69	Correct	7 ms	280 KB	Output is correct
70	Correct	7 ms	288 KB	Output is correct
71	Partially correct	44 ms	304 KB	Partially correct - number of queries: 5231
72	Correct	6 ms	336 KB	Output is correct
73	Partially correct	41 ms	304 KB	Partially correct - number of queries: 5168
74	Partially correct	53 ms	328 KB	Partially correct - number of queries: 5195
75	Correct	4 ms	208 KB	Output is correct
76	Correct	38 ms	296 KB	Output is correct
77	Correct	44 ms	304 KB	Output is correct
78	Correct	8 ms	424 KB	Output is correct
79	Correct	22 ms	328 KB	Output is correct
80	Correct	45 ms	308 KB	Output is correct
81	Correct	50 ms	428 KB	Output is correct
82	Correct	48 ms	300 KB	Output is correct
83	Correct	5 ms	208 KB	Output is correct
84	Correct	37 ms	292 KB	Output is correct
85	Correct	35 ms	208 KB	Output is correct
86	Correct	5 ms	208 KB	Output is correct
87	Correct	2 ms	208 KB	Output is correct
88	Correct	5 ms	288 KB	Output is correct
89	Correct	3 ms	208 KB	Output is correct
90	Correct	6 ms	208 KB	Output is correct
91	Correct	3 ms	208 KB	Output is correct
92	Correct	6 ms	300 KB	Output is correct
93	Correct	5 ms	304 KB	Output is correct
94	Correct	7 ms	208 KB	Output is correct
95	Correct	9 ms	208 KB	Output is correct
96	Correct	9 ms	208 KB	Output is correct
97	Correct	4 ms	208 KB	Output is correct