Submission #941619

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
941619	2024-03-09T08:01:22 Z	Xiaoyang	A Difficult(y) Choice (BOI21_books)	C++17	100 / 100	1 ms	716 KB

books

#include "books.h"
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
 
#define fi first 
#define se second 
#define pll pair<ll,ll>
#define pb push_back
#define debug(x) cerr<<#x<<"="<<x<<endl;
#define MP make_pair
#define rep(i,a,b) for(ll i=a;i<b;i++)
#define SZ(x) (ll)x.size()
#define ALL(x) x.begin(),x.end()
#define endl "\n"
const ll inf=1e18;
 
const ll maxn=1e5+5;
ll diff[maxn];
 
ll d(ll x){
	if(diff[x])return diff[x];
	return diff[x]=skim(x);
}
void solve(int n, int k, long long A, int s) {
	ll sum=0;
	vector<int>ans;
	rep(i,1,n+1){
		if(i<=k)sum+=d(i),ans.pb(i);
	}
	if(sum>2*A)impossible();
	if(sum>=A)answer(ans);
	// the sum of the first k elements is def lesser than A
	//if >=A and <=2A we would have alr answered
	//if >2A its def impossible 
	//if we find the largest index of element that is lesser than A
 
	ll lo=1,hi=n;
	while(lo<hi){
		ll mid=(lo+hi+1)>>1;
		if(d(mid)<=A)lo=mid;
		else hi=mid-1;
	}
 
	//lo+1 is more than A, check if >A + <A <=2A
	if(lo+1<=n and sum-d(k)+d(lo+1)<=2*A){
		ans[k-1]=lo+1;
		answer(ans);
	}
	
	//if not uhhh :think 
	//greedy? 
	//since lo is like less than A, and everything in the [1,k] is def<A
	//going from [1,k] to [2,k]U[lo] will def be <=2A
	//but if this continues we might get to >A eventually?
	//but as soon as its more than A we are done?
	//if it ever gets to >=A then we just check its <=2A?
	//if we do liddis i dont think we will have chance to exceed 2A???
  	//if even after all that still < A then rip cannot liao 
	ll id=1;
	while(id<=k and lo>0 and sum<A){
		ans[id-1]=lo;
		sum-=d(id);
		sum+=d(lo);
		id++;
		lo--;
	}
  	if(sum>=A)answer(ans);
	impossible();
	
	
}

Subtask #1
5.0 / 5.0

#	Verdict	Memory	Grader output
1	Correct	344 KB	Output is correct
2	Correct	344 KB	Output is correct
3	Correct	344 KB	Output is correct
4	Correct	344 KB	Output is correct
5	Correct	344 KB	Output is correct
6	Correct	344 KB	Output is correct
7	Correct	344 KB	Output is correct
8	Correct	344 KB	Output is correct

Subtask #2
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	340 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	1 ms	596 KB	Output is correct
6	Correct	1 ms	344 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	1 ms	596 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	0 ms	600 KB	Output is correct
11	Correct	0 ms	600 KB	Output is correct
12	Correct	1 ms	344 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	1 ms	600 KB	Output is correct
15	Correct	0 ms	344 KB	Output is correct
16	Correct	0 ms	600 KB	Output is correct

Subtask #3
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	1 ms	344 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	1 ms	344 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	0 ms	448 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct

Subtask #4
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	1 ms	344 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	1 ms	344 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	0 ms	448 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	444 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	1 ms	344 KB	Output is correct
16	Correct	1 ms	344 KB	Output is correct
17	Correct	1 ms	600 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	1 ms	344 KB	Output is correct
20	Correct	0 ms	600 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	0 ms	344 KB	Output is correct
23	Correct	1 ms	344 KB	Output is correct
24	Correct	1 ms	344 KB	Output is correct
25	Correct	0 ms	444 KB	Output is correct

Subtask #5
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	1 ms	344 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	1 ms	344 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	0 ms	448 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	444 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	1 ms	344 KB	Output is correct
16	Correct	1 ms	344 KB	Output is correct
17	Correct	1 ms	600 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	1 ms	344 KB	Output is correct
20	Correct	0 ms	600 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	0 ms	344 KB	Output is correct
23	Correct	1 ms	344 KB	Output is correct
24	Correct	1 ms	344 KB	Output is correct
25	Correct	0 ms	444 KB	Output is correct
26	Correct	1 ms	452 KB	Output is correct
27	Correct	1 ms	448 KB	Output is correct
28	Correct	1 ms	344 KB	Output is correct
29	Correct	0 ms	596 KB	Output is correct
30	Correct	0 ms	344 KB	Output is correct
31	Correct	0 ms	344 KB	Output is correct
32	Correct	1 ms	344 KB	Output is correct
33	Correct	0 ms	448 KB	Output is correct
34	Correct	1 ms	344 KB	Output is correct
35	Correct	1 ms	444 KB	Output is correct
36	Correct	1 ms	448 KB	Output is correct
37	Correct	1 ms	344 KB	Output is correct
38	Correct	1 ms	348 KB	Output is correct
39	Correct	1 ms	344 KB	Output is correct
40	Correct	1 ms	444 KB	Output is correct
41	Correct	1 ms	344 KB	Output is correct
42	Correct	1 ms	448 KB	Output is correct
43	Correct	1 ms	344 KB	Output is correct
44	Correct	1 ms	600 KB	Output is correct
45	Correct	0 ms	344 KB	Output is correct
46	Correct	0 ms	452 KB	Output is correct
47	Correct	1 ms	344 KB	Output is correct
48	Correct	1 ms	344 KB	Output is correct
49	Correct	1 ms	452 KB	Output is correct
50	Correct	1 ms	344 KB	Output is correct

Subtask #6
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	1 ms	344 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	1 ms	344 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	0 ms	448 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	444 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	1 ms	344 KB	Output is correct
16	Correct	1 ms	344 KB	Output is correct
17	Correct	1 ms	600 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	1 ms	344 KB	Output is correct
20	Correct	0 ms	600 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	0 ms	344 KB	Output is correct
23	Correct	1 ms	344 KB	Output is correct
24	Correct	1 ms	344 KB	Output is correct
25	Correct	0 ms	444 KB	Output is correct
26	Correct	1 ms	344 KB	Output is correct
27	Correct	1 ms	348 KB	Output is correct
28	Correct	1 ms	604 KB	Output is correct
29	Correct	1 ms	344 KB	Output is correct
30	Correct	1 ms	356 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	0 ms	344 KB	Output is correct
33	Correct	1 ms	344 KB	Output is correct
34	Correct	1 ms	344 KB	Output is correct
35	Correct	0 ms	344 KB	Output is correct
36	Correct	1 ms	444 KB	Output is correct
37	Correct	0 ms	344 KB	Output is correct
38	Correct	0 ms	344 KB	Output is correct
39	Correct	0 ms	444 KB	Output is correct
40	Correct	1 ms	344 KB	Output is correct
41	Correct	0 ms	444 KB	Output is correct
42	Correct	1 ms	344 KB	Output is correct
43	Correct	1 ms	344 KB	Output is correct
44	Correct	1 ms	344 KB	Output is correct
45	Correct	0 ms	596 KB	Output is correct
46	Correct	1 ms	344 KB	Output is correct
47	Correct	0 ms	448 KB	Output is correct
48	Correct	0 ms	448 KB	Output is correct
49	Correct	0 ms	344 KB	Output is correct
50	Correct	1 ms	344 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	1 ms	344 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	1 ms	344 KB	Output is correct
7	Correct	1 ms	344 KB	Output is correct
8	Correct	0 ms	448 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	444 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	1 ms	344 KB	Output is correct
16	Correct	1 ms	344 KB	Output is correct
17	Correct	1 ms	600 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	1 ms	344 KB	Output is correct
20	Correct	0 ms	600 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	0 ms	344 KB	Output is correct
23	Correct	1 ms	344 KB	Output is correct
24	Correct	1 ms	344 KB	Output is correct
25	Correct	0 ms	444 KB	Output is correct
26	Correct	1 ms	452 KB	Output is correct
27	Correct	1 ms	448 KB	Output is correct
28	Correct	1 ms	344 KB	Output is correct
29	Correct	0 ms	596 KB	Output is correct
30	Correct	0 ms	344 KB	Output is correct
31	Correct	0 ms	344 KB	Output is correct
32	Correct	1 ms	344 KB	Output is correct
33	Correct	0 ms	448 KB	Output is correct
34	Correct	1 ms	344 KB	Output is correct
35	Correct	1 ms	444 KB	Output is correct
36	Correct	1 ms	448 KB	Output is correct
37	Correct	1 ms	344 KB	Output is correct
38	Correct	1 ms	348 KB	Output is correct
39	Correct	1 ms	344 KB	Output is correct
40	Correct	1 ms	444 KB	Output is correct
41	Correct	1 ms	344 KB	Output is correct
42	Correct	1 ms	448 KB	Output is correct
43	Correct	1 ms	344 KB	Output is correct
44	Correct	1 ms	600 KB	Output is correct
45	Correct	0 ms	344 KB	Output is correct
46	Correct	0 ms	452 KB	Output is correct
47	Correct	1 ms	344 KB	Output is correct
48	Correct	1 ms	344 KB	Output is correct
49	Correct	1 ms	452 KB	Output is correct
50	Correct	1 ms	344 KB	Output is correct
51	Correct	1 ms	344 KB	Output is correct
52	Correct	1 ms	348 KB	Output is correct
53	Correct	1 ms	604 KB	Output is correct
54	Correct	1 ms	344 KB	Output is correct
55	Correct	1 ms	356 KB	Output is correct
56	Correct	0 ms	348 KB	Output is correct
57	Correct	0 ms	344 KB	Output is correct
58	Correct	1 ms	344 KB	Output is correct
59	Correct	1 ms	344 KB	Output is correct
60	Correct	0 ms	344 KB	Output is correct
61	Correct	1 ms	444 KB	Output is correct
62	Correct	0 ms	344 KB	Output is correct
63	Correct	0 ms	344 KB	Output is correct
64	Correct	0 ms	444 KB	Output is correct
65	Correct	1 ms	344 KB	Output is correct
66	Correct	0 ms	444 KB	Output is correct
67	Correct	1 ms	344 KB	Output is correct
68	Correct	1 ms	344 KB	Output is correct
69	Correct	1 ms	344 KB	Output is correct
70	Correct	0 ms	596 KB	Output is correct
71	Correct	1 ms	344 KB	Output is correct
72	Correct	0 ms	448 KB	Output is correct
73	Correct	0 ms	448 KB	Output is correct
74	Correct	0 ms	344 KB	Output is correct
75	Correct	1 ms	344 KB	Output is correct
76	Correct	0 ms	344 KB	Output is correct
77	Correct	0 ms	596 KB	Output is correct
78	Correct	1 ms	344 KB	Output is correct
79	Correct	1 ms	344 KB	Output is correct
80	Correct	0 ms	344 KB	Output is correct
81	Correct	0 ms	344 KB	Output is correct
82	Correct	0 ms	344 KB	Output is correct
83	Correct	0 ms	344 KB	Output is correct
84	Correct	0 ms	600 KB	Output is correct
85	Correct	0 ms	344 KB	Output is correct
86	Correct	1 ms	452 KB	Output is correct
87	Correct	1 ms	344 KB	Output is correct
88	Correct	0 ms	344 KB	Output is correct
89	Correct	1 ms	600 KB	Output is correct
90	Correct	1 ms	344 KB	Output is correct
91	Correct	0 ms	600 KB	Output is correct
92	Correct	1 ms	600 KB	Output is correct
93	Correct	1 ms	600 KB	Output is correct
94	Correct	1 ms	440 KB	Output is correct
95	Correct	0 ms	344 KB	Output is correct
96	Correct	0 ms	344 KB	Output is correct
97	Correct	1 ms	344 KB	Output is correct
98	Correct	1 ms	344 KB	Output is correct
99	Correct	1 ms	448 KB	Output is correct
100	Correct	0 ms	344 KB	Output is correct
101	Correct	0 ms	444 KB	Output is correct
102	Correct	1 ms	352 KB	Output is correct
103	Correct	0 ms	344 KB	Output is correct
104	Correct	0 ms	344 KB	Output is correct
105	Correct	1 ms	344 KB	Output is correct
106	Correct	1 ms	600 KB	Output is correct
107	Correct	1 ms	552 KB	Output is correct
108	Correct	0 ms	344 KB	Output is correct
109	Correct	1 ms	344 KB	Output is correct
110	Correct	1 ms	344 KB	Output is correct
111	Correct	0 ms	344 KB	Output is correct
112	Correct	1 ms	500 KB	Output is correct
113	Correct	1 ms	600 KB	Output is correct
114	Correct	1 ms	344 KB	Output is correct
115	Correct	1 ms	356 KB	Output is correct
116	Correct	1 ms	612 KB	Output is correct
117	Correct	1 ms	716 KB	Output is correct
118	Correct	1 ms	356 KB	Output is correct
119	Correct	1 ms	356 KB	Output is correct
120	Correct	1 ms	356 KB	Output is correct
121	Correct	1 ms	356 KB	Output is correct
122	Correct	0 ms	460 KB	Output is correct
123	Correct	1 ms	344 KB	Output is correct
124	Correct	0 ms	448 KB	Output is correct
125	Correct	0 ms	344 KB	Output is correct
126	Correct	1 ms	448 KB	Output is correct
127	Correct	0 ms	344 KB	Output is correct
128	Correct	1 ms	344 KB	Output is correct
129	Correct	1 ms	452 KB	Output is correct
130	Correct	0 ms	344 KB	Output is correct
131	Correct	1 ms	344 KB	Output is correct
132	Correct	1 ms	356 KB	Output is correct
133	Correct	1 ms	356 KB	Output is correct
134	Correct	0 ms	452 KB	Output is correct
135	Correct	1 ms	356 KB	Output is correct

Submission #941619

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 15.0 / 15.0

Subtask #3 10.0 / 10.0

Subtask #4 15.0 / 15.0

Subtask #5 15.0 / 15.0

Subtask #6 20.0 / 20.0

Subtask #7 20.0 / 20.0

Subtask #1
5.0 / 5.0

Subtask #2
15.0 / 15.0

Subtask #3
10.0 / 10.0

Subtask #4
15.0 / 15.0

Subtask #5
15.0 / 15.0

Subtask #6
20.0 / 20.0

Subtask #7
20.0 / 20.0