oj.uz

Submission #409228

# Submission time Handle Problem Language Result Execution time Memory
409228 2021-05-20T11:38:19 Z jamielim A Difficult(y) Choice (BOI21_books) C++14
100 / 100
 2 ms 1072 KB 
#include <bits/stdc++.h>

#include "books.h"

using namespace std;
//
// --- Sample implementation for the task books ---
//
// To compile this program with the sample grader, place:
//     books.h books.cpp grader.cpp
// in a single folder and run:
//     g++ books.cpp grader.cpp
// in this folder.
//

#define fi first
#define se second
#define mp make_pair
#define pb emplace_back
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)x.size()
typedef long long ll;
typedef pair<int,int> ii;
typedef pair<ii,ii> i4;
const int MOD=1000000007;
const int INF=1012345678;
const ll LLINF=1012345678012345678LL;
const double PI=3.1415926536;
const double EPS=1e-14;

ll arr[100005];

ll get(int x){
	if(arr[x]==-1)arr[x]=skim(x);
	return arr[x];
}

void solve(int N, int K, long long A, int S) {
    memset(arr,-1,sizeof(arr));
    int l=1,r=N;
    while(l<r){
		int m=(l+r+1)/2;
		if(get(m)<A){
			l=m;
		}else{
			r=m-1;
		}
	}
	if(l<=K-2){
		impossible();
		return;
	}
	if(l==K-1){
		ll sum=0;
		vector<int> v;
		for(int i=1;i<=K;i++){
			sum+=get(i);
			v.pb(i);
		}
		if(sum<A||sum>2*A)impossible(); // sum<A should not happen since get(K)>=A
		else answer(v);
		return;
	}
	ll small=0,large=0;
	for(int i=1;i<=K;i++)small+=get(i);
	for(int i=l;i>l-K;i--)large+=get(i);
	if(small>2*A){impossible();return;}
	if(large<A){
		vector<int> v;for(int i=1;i<K;i++)v.pb(i);v.pb(l+1);
		if(l+1<=N&&small-get(K)+get(l+1)<=2*A)answer(v);
		else impossible();
		return;
	}
	// small<=2A, large>=A
	ll sum=small;
	for(int i=K;i>=1;i--){
		if(sum>=A){
			vector<int> v;
			for(int j=1;j<=i;j++){
				v.pb(j);
			}
			for(int j=l-K+i+1;j<=l;j++){
				v.pb(j);
			}
			answer(v);
			return;
		}
		sum-=get(i);
		sum+=get(l-K+i);
	}
	if(sum>=A){
		vector<int> v;
		for(int j=l-K+1;j<=l;j++)v.pb(j);
		answer(v);
		return;
	}
	impossible();
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 1 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 1 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 1 ms 968 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 1 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 1 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 1 ms 968 KB Output is correct
9 Correct 1 ms 968 KB Output is correct
10 Correct 1 ms 968 KB Output is correct
11 Correct 2 ms 968 KB Output is correct
12 Correct 2 ms 968 KB Output is correct
13 Correct 1 ms 968 KB Output is correct
14 Correct 1 ms 968 KB Output is correct
15 Correct 2 ms 968 KB Output is correct
16 Correct 2 ms 968 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 2 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 2 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 2 ms 968 KB Output is correct
9 Correct 2 ms 968 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 2 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 2 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 2 ms 968 KB Output is correct
9 Correct 2 ms 968 KB Output is correct
10 Correct 1 ms 968 KB Output is correct
11 Correct 2 ms 968 KB Output is correct
12 Correct 1 ms 968 KB Output is correct
13 Correct 2 ms 968 KB Output is correct
14 Correct 2 ms 1072 KB Output is correct
15 Correct 1 ms 968 KB Output is correct
16 Correct 1 ms 968 KB Output is correct
17 Correct 2 ms 968 KB Output is correct
18 Correct 1 ms 968 KB Output is correct
19 Correct 2 ms 968 KB Output is correct
20 Correct 2 ms 968 KB Output is correct
21 Correct 1 ms 968 KB Output is correct
22 Correct 2 ms 968 KB Output is correct
23 Correct 2 ms 968 KB Output is correct
24 Correct 2 ms 968 KB Output is correct
25 Correct 1 ms 968 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 2 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 2 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 2 ms 968 KB Output is correct
9 Correct 2 ms 968 KB Output is correct
10 Correct 1 ms 968 KB Output is correct
11 Correct 2 ms 968 KB Output is correct
12 Correct 1 ms 968 KB Output is correct
13 Correct 2 ms 968 KB Output is correct
14 Correct 2 ms 1072 KB Output is correct
15 Correct 1 ms 968 KB Output is correct
16 Correct 1 ms 968 KB Output is correct
17 Correct 2 ms 968 KB Output is correct
18 Correct 1 ms 968 KB Output is correct
19 Correct 2 ms 968 KB Output is correct
20 Correct 2 ms 968 KB Output is correct
21 Correct 1 ms 968 KB Output is correct
22 Correct 2 ms 968 KB Output is correct
23 Correct 2 ms 968 KB Output is correct
24 Correct 2 ms 968 KB Output is correct
25 Correct 1 ms 968 KB Output is correct
26 Correct 1 ms 968 KB Output is correct
27 Correct 1 ms 968 KB Output is correct
28 Correct 2 ms 968 KB Output is correct
29 Correct 1 ms 968 KB Output is correct
30 Correct 1 ms 968 KB Output is correct
31 Correct 2 ms 968 KB Output is correct
32 Correct 2 ms 968 KB Output is correct
33 Correct 2 ms 968 KB Output is correct
34 Correct 2 ms 968 KB Output is correct
35 Correct 1 ms 968 KB Output is correct
36 Correct 2 ms 968 KB Output is correct
37 Correct 2 ms 968 KB Output is correct
38 Correct 2 ms 968 KB Output is correct
39 Correct 1 ms 968 KB Output is correct
40 Correct 2 ms 968 KB Output is correct
41 Correct 2 ms 968 KB Output is correct
42 Correct 2 ms 968 KB Output is correct
43 Correct 2 ms 968 KB Output is correct
44 Correct 2 ms 968 KB Output is correct
45 Correct 2 ms 968 KB Output is correct
46 Correct 2 ms 964 KB Output is correct
47 Correct 2 ms 968 KB Output is correct
48 Correct 2 ms 968 KB Output is correct
49 Correct 1 ms 968 KB Output is correct
50 Correct 2 ms 968 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 2 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 2 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 2 ms 968 KB Output is correct
9 Correct 2 ms 968 KB Output is correct
10 Correct 1 ms 968 KB Output is correct
11 Correct 2 ms 968 KB Output is correct
12 Correct 1 ms 968 KB Output is correct
13 Correct 2 ms 968 KB Output is correct
14 Correct 2 ms 1072 KB Output is correct
15 Correct 1 ms 968 KB Output is correct
16 Correct 1 ms 968 KB Output is correct
17 Correct 2 ms 968 KB Output is correct
18 Correct 1 ms 968 KB Output is correct
19 Correct 2 ms 968 KB Output is correct
20 Correct 2 ms 968 KB Output is correct
21 Correct 1 ms 968 KB Output is correct
22 Correct 2 ms 968 KB Output is correct
23 Correct 2 ms 968 KB Output is correct
24 Correct 2 ms 968 KB Output is correct
25 Correct 1 ms 968 KB Output is correct
26 Correct 1 ms 968 KB Output is correct
27 Correct 1 ms 968 KB Output is correct
28 Correct 2 ms 968 KB Output is correct
29 Correct 2 ms 968 KB Output is correct
30 Correct 2 ms 968 KB Output is correct
31 Correct 1 ms 968 KB Output is correct
32 Correct 1 ms 968 KB Output is correct
33 Correct 2 ms 968 KB Output is correct
34 Correct 2 ms 968 KB Output is correct
35 Correct 2 ms 968 KB Output is correct
36 Correct 2 ms 968 KB Output is correct
37 Correct 1 ms 968 KB Output is correct
38 Correct 1 ms 968 KB Output is correct
39 Correct 1 ms 968 KB Output is correct
40 Correct 1 ms 968 KB Output is correct
41 Correct 2 ms 968 KB Output is correct
42 Correct 2 ms 968 KB Output is correct
43 Correct 2 ms 968 KB Output is correct
44 Correct 1 ms 968 KB Output is correct
45 Correct 1 ms 968 KB Output is correct
46 Correct 2 ms 968 KB Output is correct
47 Correct 2 ms 968 KB Output is correct
48 Correct 2 ms 968 KB Output is correct
49 Correct 2 ms 968 KB Output is correct
50 Correct 2 ms 968 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 2 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 2 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 2 ms 968 KB Output is correct
9 Correct 2 ms 968 KB Output is correct
10 Correct 1 ms 968 KB Output is correct
11 Correct 2 ms 968 KB Output is correct
12 Correct 1 ms 968 KB Output is correct
13 Correct 2 ms 968 KB Output is correct
14 Correct 2 ms 1072 KB Output is correct
15 Correct 1 ms 968 KB Output is correct
16 Correct 1 ms 968 KB Output is correct
17 Correct 2 ms 968 KB Output is correct
18 Correct 1 ms 968 KB Output is correct
19 Correct 2 ms 968 KB Output is correct
20 Correct 2 ms 968 KB Output is correct
21 Correct 1 ms 968 KB Output is correct
22 Correct 2 ms 968 KB Output is correct
23 Correct 2 ms 968 KB Output is correct
24 Correct 2 ms 968 KB Output is correct
25 Correct 1 ms 968 KB Output is correct
26 Correct 1 ms 968 KB Output is correct
27 Correct 1 ms 968 KB Output is correct
28 Correct 2 ms 968 KB Output is correct
29 Correct 1 ms 968 KB Output is correct
30 Correct 1 ms 968 KB Output is correct
31 Correct 2 ms 968 KB Output is correct
32 Correct 2 ms 968 KB Output is correct
33 Correct 2 ms 968 KB Output is correct
34 Correct 2 ms 968 KB Output is correct
35 Correct 1 ms 968 KB Output is correct
36 Correct 2 ms 968 KB Output is correct
37 Correct 2 ms 968 KB Output is correct
38 Correct 2 ms 968 KB Output is correct
39 Correct 1 ms 968 KB Output is correct
40 Correct 2 ms 968 KB Output is correct
41 Correct 2 ms 968 KB Output is correct
42 Correct 2 ms 968 KB Output is correct
43 Correct 2 ms 968 KB Output is correct
44 Correct 2 ms 968 KB Output is correct
45 Correct 2 ms 968 KB Output is correct
46 Correct 2 ms 964 KB Output is correct
47 Correct 2 ms 968 KB Output is correct
48 Correct 2 ms 968 KB Output is correct
49 Correct 1 ms 968 KB Output is correct
50 Correct 2 ms 968 KB Output is correct
51 Correct 1 ms 968 KB Output is correct
52 Correct 1 ms 968 KB Output is correct
53 Correct 2 ms 968 KB Output is correct
54 Correct 2 ms 968 KB Output is correct
55 Correct 2 ms 968 KB Output is correct
56 Correct 1 ms 968 KB Output is correct
57 Correct 1 ms 968 KB Output is correct
58 Correct 2 ms 968 KB Output is correct
59 Correct 2 ms 968 KB Output is correct
60 Correct 2 ms 968 KB Output is correct
61 Correct 2 ms 968 KB Output is correct
62 Correct 1 ms 968 KB Output is correct
63 Correct 1 ms 968 KB Output is correct
64 Correct 1 ms 968 KB Output is correct
65 Correct 1 ms 968 KB Output is correct
66 Correct 2 ms 968 KB Output is correct
67 Correct 2 ms 968 KB Output is correct
68 Correct 2 ms 968 KB Output is correct
69 Correct 1 ms 968 KB Output is correct
70 Correct 1 ms 968 KB Output is correct
71 Correct 2 ms 968 KB Output is correct
72 Correct 2 ms 968 KB Output is correct
73 Correct 2 ms 968 KB Output is correct
74 Correct 2 ms 968 KB Output is correct
75 Correct 2 ms 968 KB Output is correct
76 Correct 1 ms 968 KB Output is correct
77 Correct 1 ms 968 KB Output is correct
78 Correct 1 ms 968 KB Output is correct
79 Correct 1 ms 968 KB Output is correct
80 Correct 2 ms 968 KB Output is correct
81 Correct 1 ms 968 KB Output is correct
82 Correct 1 ms 968 KB Output is correct
83 Correct 1 ms 968 KB Output is correct
84 Correct 2 ms 968 KB Output is correct
85 Correct 1 ms 968 KB Output is correct
86 Correct 2 ms 968 KB Output is correct
87 Correct 2 ms 968 KB Output is correct
88 Correct 2 ms 968 KB Output is correct
89 Correct 1 ms 968 KB Output is correct
90 Correct 2 ms 968 KB Output is correct
91 Correct 2 ms 968 KB Output is correct
92 Correct 2 ms 968 KB Output is correct
93 Correct 2 ms 968 KB Output is correct
94 Correct 2 ms 968 KB Output is correct
95 Correct 1 ms 968 KB Output is correct
96 Correct 1 ms 968 KB Output is correct
97 Correct 1 ms 968 KB Output is correct
98 Correct 1 ms 968 KB Output is correct
99 Correct 2 ms 968 KB Output is correct
100 Correct 2 ms 968 KB Output is correct
101 Correct 2 ms 968 KB Output is correct
102 Correct 2 ms 968 KB Output is correct
103 Correct 1 ms 968 KB Output is correct
104 Correct 1 ms 968 KB Output is correct
105 Correct 2 ms 968 KB Output is correct
106 Correct 1 ms 968 KB Output is correct
107 Correct 2 ms 968 KB Output is correct
108 Correct 1 ms 968 KB Output is correct
109 Correct 1 ms 968 KB Output is correct
110 Correct 2 ms 968 KB Output is correct
111 Correct 1 ms 968 KB Output is correct
112 Correct 2 ms 968 KB Output is correct
113 Correct 2 ms 968 KB Output is correct
114 Correct 1 ms 968 KB Output is correct
115 Correct 1 ms 968 KB Output is correct
116 Correct 2 ms 968 KB Output is correct
117 Correct 2 ms 968 KB Output is correct
118 Correct 1 ms 968 KB Output is correct
119 Correct 2 ms 968 KB Output is correct
120 Correct 1 ms 968 KB Output is correct
121 Correct 2 ms 968 KB Output is correct
122 Correct 2 ms 968 KB Output is correct
123 Correct 2 ms 968 KB Output is correct
124 Correct 2 ms 968 KB Output is correct
125 Correct 1 ms 968 KB Output is correct
126 Correct 1 ms 968 KB Output is correct
127 Correct 1 ms 968 KB Output is correct
128 Correct 1 ms 968 KB Output is correct
129 Correct 2 ms 968 KB Output is correct
130 Correct 2 ms 968 KB Output is correct
131 Correct 2 ms 968 KB Output is correct
132 Correct 2 ms 968 KB Output is correct
133 Correct 2 ms 968 KB Output is correct
134 Correct 1 ms 968 KB Output is correct
135 Correct 2 ms 968 KB Output is correct