oj.uz

Submission #734065

# Submission time Handle Problem Language Result Execution time Memory
734065 2023-05-01T15:40:00 Z myrcella The short shank; Redemption (BOI21_prison) C++17
100 / 100
 981 ms 436728 KB 
//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;}

const int maxn = 2e6+10;
int n,d,T;
int t[maxn];
int le[maxn];
int mn[maxn][21];
int lg[maxn];
vector <int> edge[maxn];
int hson[maxn];
pq <pii> s;
int vis[maxn];

int query(int l,int r) {
	int tmp = lg[r-l+1];
	return min(mn[l][tmp],mn[r-(1<<tmp)+1][tmp]);
}

int dfs(int u) {
	int val = 0; vis[u] = 1;
	for (int v:edge[u]) {
		int tmp = dfs(v);
		if (tmp>val) val=tmp,hson[u] = v;
	}
	s.push({val+1,u});
	return val+1;
}

int main() {
//	freopen("input.txt","r",stdin);	
	std::ios::sync_with_stdio(false);cin.tie(0);
	cin>>n>>d>>T;
	rep(i,0,n) cin>>t[i],mn[i][0] = t[i]-i;
	lg[1] = 0;
	rep(i,2,maxn) lg[i] = lg[i/2]+1;
	for (int i = n-1;i>=0;i--) 
		rep(j,1,21) {
			if (i+(1<<j)>n) break;
			mn[i][j] = min(mn[i][j-1],mn[i+(1<<(j-1))][j-1]);
		}
	vector <pii> tmp;
	int ans = n;
	rep(i,0,n) {
		if (t[i]<=T) le[i] = maxn;
		else {
			int l = 0,r=i;
			while (l<r) {
				int mid = l+r>>1;
				if (mid==i or query(mid,i-1)+i>T) r=mid;
				else l = mid+1;
			}
			le[i] = l;
			if (le[i]==0) ans--;
			else {
				while (!tmp.empty() and tmp.back().fi>=le[i]) edge[i].pb(tmp.back().se),tmp.pop_back();
				tmp.pb({le[i],i});
			}
		}
	}
	memset(hson,-1,sizeof(hson));
	for (int i = n-1;i>=0;i--)
		if (le[i]!=maxn and le[i]!=0 and vis[i]==0) dfs(i);
	memset(vis,0,sizeof(vis));
	rep(i,0,d) {
		while (!s.empty() and vis[s.top().se]) s.pop();
		if (s.empty()) break;
		ans -= s.top().fi;
		int u = s.top().se;
		while (u!=-1) vis[u]=1,u=hson[u];
	}
	cout<<ans;
	return 0;
}

Compilation message

prison.cpp: In function 'int main()':
prison.cpp:69:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   69 |     int mid = l+r>>1;
      |               ~^~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 70732 KB Output is correct
2 Correct 32 ms 70740 KB Output is correct
3 Correct 33 ms 70740 KB Output is correct
4 Correct 32 ms 70808 KB Output is correct
5 Correct 34 ms 70880 KB Output is correct
6 Correct 33 ms 70740 KB Output is correct
7 Correct 32 ms 70720 KB Output is correct
8 Correct 32 ms 70740 KB Output is correct
9 Correct 32 ms 70848 KB Output is correct
10 Correct 35 ms 70732 KB Output is correct
11 Correct 39 ms 70836 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 70704 KB Output is correct
2 Correct 167 ms 122740 KB Output is correct
3 Correct 155 ms 119932 KB Output is correct
4 Correct 167 ms 125692 KB Output is correct
5 Correct 178 ms 128332 KB Output is correct
6 Correct 178 ms 126912 KB Output is correct
7 Correct 218 ms 176368 KB Output is correct
8 Correct 196 ms 128568 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 70732 KB Output is correct
2 Correct 32 ms 70740 KB Output is correct
3 Correct 33 ms 70740 KB Output is correct
4 Correct 32 ms 70808 KB Output is correct
5 Correct 34 ms 70880 KB Output is correct
6 Correct 33 ms 70740 KB Output is correct
7 Correct 32 ms 70720 KB Output is correct
8 Correct 32 ms 70740 KB Output is correct
9 Correct 32 ms 70848 KB Output is correct
10 Correct 35 ms 70732 KB Output is correct
11 Correct 39 ms 70836 KB Output is correct
12 Correct 36 ms 70732 KB Output is correct
13 Correct 33 ms 70816 KB Output is correct
14 Correct 34 ms 70808 KB Output is correct
15 Correct 34 ms 70848 KB Output is correct
16 Correct 35 ms 70732 KB Output is correct
17 Correct 33 ms 70864 KB Output is correct
18 Correct 34 ms 70740 KB Output is correct
19 Correct 37 ms 70836 KB Output is correct
20 Correct 36 ms 70836 KB Output is correct
21 Correct 37 ms 70792 KB Output is correct
22 Correct 36 ms 70728 KB Output is correct
23 Correct 40 ms 71280 KB Output is correct
24 Correct 37 ms 71104 KB Output is correct
25 Correct 37 ms 71244 KB Output is correct
26 Correct 36 ms 71184 KB Output is correct
27 Correct 38 ms 71208 KB Output is correct
28 Correct 36 ms 71220 KB Output is correct
29 Correct 36 ms 71228 KB Output is correct
30 Correct 37 ms 71168 KB Output is correct
31 Correct 37 ms 71116 KB Output is correct
32 Correct 37 ms 71184 KB Output is correct
33 Correct 36 ms 71096 KB Output is correct
34 Correct 39 ms 71252 KB Output is correct
35 Correct 36 ms 71268 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 70732 KB Output is correct
2 Correct 54 ms 79184 KB Output is correct
3 Correct 56 ms 78652 KB Output is correct
4 Correct 56 ms 82084 KB Output is correct
5 Correct 59 ms 84400 KB Output is correct
6 Correct 60 ms 84340 KB Output is correct
7 Correct 52 ms 79700 KB Output is correct
8 Correct 53 ms 79368 KB Output is correct
9 Correct 69 ms 86940 KB Output is correct
10 Correct 50 ms 78668 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 70732 KB Output is correct
2 Correct 32 ms 70740 KB Output is correct
3 Correct 33 ms 70740 KB Output is correct
4 Correct 32 ms 70808 KB Output is correct
5 Correct 34 ms 70880 KB Output is correct
6 Correct 33 ms 70740 KB Output is correct
7 Correct 32 ms 70720 KB Output is correct
8 Correct 32 ms 70740 KB Output is correct
9 Correct 32 ms 70848 KB Output is correct
10 Correct 35 ms 70732 KB Output is correct
11 Correct 39 ms 70836 KB Output is correct
12 Correct 36 ms 70732 KB Output is correct
13 Correct 33 ms 70816 KB Output is correct
14 Correct 34 ms 70808 KB Output is correct
15 Correct 34 ms 70848 KB Output is correct
16 Correct 35 ms 70732 KB Output is correct
17 Correct 33 ms 70864 KB Output is correct
18 Correct 34 ms 70740 KB Output is correct
19 Correct 37 ms 70836 KB Output is correct
20 Correct 36 ms 70836 KB Output is correct
21 Correct 37 ms 70792 KB Output is correct
22 Correct 36 ms 70728 KB Output is correct
23 Correct 40 ms 71280 KB Output is correct
24 Correct 37 ms 71104 KB Output is correct
25 Correct 37 ms 71244 KB Output is correct
26 Correct 36 ms 71184 KB Output is correct
27 Correct 38 ms 71208 KB Output is correct
28 Correct 36 ms 71220 KB Output is correct
29 Correct 36 ms 71228 KB Output is correct
30 Correct 37 ms 71168 KB Output is correct
31 Correct 37 ms 71116 KB Output is correct
32 Correct 37 ms 71184 KB Output is correct
33 Correct 36 ms 71096 KB Output is correct
34 Correct 39 ms 71252 KB Output is correct
35 Correct 36 ms 71268 KB Output is correct
36 Correct 36 ms 70732 KB Output is correct
37 Correct 54 ms 79184 KB Output is correct
38 Correct 56 ms 78652 KB Output is correct
39 Correct 56 ms 82084 KB Output is correct
40 Correct 59 ms 84400 KB Output is correct
41 Correct 60 ms 84340 KB Output is correct
42 Correct 52 ms 79700 KB Output is correct
43 Correct 53 ms 79368 KB Output is correct
44 Correct 69 ms 86940 KB Output is correct
45 Correct 50 ms 78668 KB Output is correct
46 Correct 35 ms 70720 KB Output is correct
47 Correct 35 ms 70808 KB Output is correct
48 Correct 34 ms 70828 KB Output is correct
49 Correct 35 ms 70784 KB Output is correct
50 Correct 35 ms 70740 KB Output is correct
51 Correct 35 ms 70732 KB Output is correct
52 Correct 34 ms 70840 KB Output is correct
53 Correct 35 ms 70712 KB Output is correct
54 Correct 35 ms 70740 KB Output is correct
55 Correct 38 ms 70752 KB Output is correct
56 Correct 34 ms 70740 KB Output is correct
57 Correct 35 ms 71284 KB Output is correct
58 Correct 34 ms 71156 KB Output is correct
59 Correct 35 ms 71288 KB Output is correct
60 Correct 36 ms 71252 KB Output is correct
61 Correct 35 ms 71292 KB Output is correct
62 Correct 37 ms 71184 KB Output is correct
63 Correct 37 ms 71164 KB Output is correct
64 Correct 35 ms 71248 KB Output is correct
65 Correct 35 ms 71244 KB Output is correct
66 Correct 38 ms 71220 KB Output is correct
67 Correct 37 ms 71100 KB Output is correct
68 Correct 35 ms 71172 KB Output is correct
69 Correct 35 ms 71304 KB Output is correct
70 Correct 34 ms 70740 KB Output is correct
71 Correct 53 ms 79940 KB Output is correct
72 Correct 54 ms 79516 KB Output is correct
73 Correct 59 ms 82536 KB Output is correct
74 Correct 61 ms 84344 KB Output is correct
75 Correct 60 ms 84356 KB Output is correct
76 Correct 53 ms 79688 KB Output is correct
77 Correct 53 ms 79432 KB Output is correct
78 Correct 66 ms 86976 KB Output is correct
79 Correct 50 ms 78676 KB Output is correct
80 Correct 52 ms 79388 KB Output is correct
81 Correct 58 ms 79820 KB Output is correct
82 Correct 54 ms 79400 KB Output is correct
83 Correct 59 ms 80964 KB Output is correct
84 Correct 55 ms 79348 KB Output is correct
85 Correct 67 ms 84604 KB Output is correct
86 Correct 55 ms 80700 KB Output is correct
87 Correct 53 ms 79092 KB Output is correct
88 Correct 61 ms 85264 KB Output is correct
89 Correct 64 ms 86448 KB Output is correct
90 Correct 64 ms 83952 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 70732 KB Output is correct
2 Correct 32 ms 70740 KB Output is correct
3 Correct 33 ms 70740 KB Output is correct
4 Correct 32 ms 70808 KB Output is correct
5 Correct 34 ms 70880 KB Output is correct
6 Correct 33 ms 70740 KB Output is correct
7 Correct 32 ms 70720 KB Output is correct
8 Correct 32 ms 70740 KB Output is correct
9 Correct 32 ms 70848 KB Output is correct
10 Correct 35 ms 70732 KB Output is correct
11 Correct 39 ms 70836 KB Output is correct
12 Correct 31 ms 70704 KB Output is correct
13 Correct 167 ms 122740 KB Output is correct
14 Correct 155 ms 119932 KB Output is correct
15 Correct 167 ms 125692 KB Output is correct
16 Correct 178 ms 128332 KB Output is correct
17 Correct 178 ms 126912 KB Output is correct
18 Correct 218 ms 176368 KB Output is correct
19 Correct 196 ms 128568 KB Output is correct
20 Correct 36 ms 70732 KB Output is correct
21 Correct 33 ms 70816 KB Output is correct
22 Correct 34 ms 70808 KB Output is correct
23 Correct 34 ms 70848 KB Output is correct
24 Correct 35 ms 70732 KB Output is correct
25 Correct 33 ms 70864 KB Output is correct
26 Correct 34 ms 70740 KB Output is correct
27 Correct 37 ms 70836 KB Output is correct
28 Correct 36 ms 70836 KB Output is correct
29 Correct 37 ms 70792 KB Output is correct
30 Correct 36 ms 70728 KB Output is correct
31 Correct 40 ms 71280 KB Output is correct
32 Correct 37 ms 71104 KB Output is correct
33 Correct 37 ms 71244 KB Output is correct
34 Correct 36 ms 71184 KB Output is correct
35 Correct 38 ms 71208 KB Output is correct
36 Correct 36 ms 71220 KB Output is correct
37 Correct 36 ms 71228 KB Output is correct
38 Correct 37 ms 71168 KB Output is correct
39 Correct 37 ms 71116 KB Output is correct
40 Correct 37 ms 71184 KB Output is correct
41 Correct 36 ms 71096 KB Output is correct
42 Correct 39 ms 71252 KB Output is correct
43 Correct 36 ms 71268 KB Output is correct
44 Correct 36 ms 70732 KB Output is correct
45 Correct 54 ms 79184 KB Output is correct
46 Correct 56 ms 78652 KB Output is correct
47 Correct 56 ms 82084 KB Output is correct
48 Correct 59 ms 84400 KB Output is correct
49 Correct 60 ms 84340 KB Output is correct
50 Correct 52 ms 79700 KB Output is correct
51 Correct 53 ms 79368 KB Output is correct
52 Correct 69 ms 86940 KB Output is correct
53 Correct 50 ms 78668 KB Output is correct
54 Correct 35 ms 70720 KB Output is correct
55 Correct 35 ms 70808 KB Output is correct
56 Correct 34 ms 70828 KB Output is correct
57 Correct 35 ms 70784 KB Output is correct
58 Correct 35 ms 70740 KB Output is correct
59 Correct 35 ms 70732 KB Output is correct
60 Correct 34 ms 70840 KB Output is correct
61 Correct 35 ms 70712 KB Output is correct
62 Correct 35 ms 70740 KB Output is correct
63 Correct 38 ms 70752 KB Output is correct
64 Correct 34 ms 70740 KB Output is correct
65 Correct 35 ms 71284 KB Output is correct
66 Correct 34 ms 71156 KB Output is correct
67 Correct 35 ms 71288 KB Output is correct
68 Correct 36 ms 71252 KB Output is correct
69 Correct 35 ms 71292 KB Output is correct
70 Correct 37 ms 71184 KB Output is correct
71 Correct 37 ms 71164 KB Output is correct
72 Correct 35 ms 71248 KB Output is correct
73 Correct 35 ms 71244 KB Output is correct
74 Correct 38 ms 71220 KB Output is correct
75 Correct 37 ms 71100 KB Output is correct
76 Correct 35 ms 71172 KB Output is correct
77 Correct 35 ms 71304 KB Output is correct
78 Correct 34 ms 70740 KB Output is correct
79 Correct 53 ms 79940 KB Output is correct
80 Correct 54 ms 79516 KB Output is correct
81 Correct 59 ms 82536 KB Output is correct
82 Correct 61 ms 84344 KB Output is correct
83 Correct 60 ms 84356 KB Output is correct
84 Correct 53 ms 79688 KB Output is correct
85 Correct 53 ms 79432 KB Output is correct
86 Correct 66 ms 86976 KB Output is correct
87 Correct 50 ms 78676 KB Output is correct
88 Correct 52 ms 79388 KB Output is correct
89 Correct 58 ms 79820 KB Output is correct
90 Correct 54 ms 79400 KB Output is correct
91 Correct 59 ms 80964 KB Output is correct
92 Correct 55 ms 79348 KB Output is correct
93 Correct 67 ms 84604 KB Output is correct
94 Correct 55 ms 80700 KB Output is correct
95 Correct 53 ms 79092 KB Output is correct
96 Correct 61 ms 85264 KB Output is correct
97 Correct 64 ms 86448 KB Output is correct
98 Correct 64 ms 83952 KB Output is correct
99 Correct 35 ms 70728 KB Output is correct
100 Correct 35 ms 70820 KB Output is correct
101 Correct 37 ms 70820 KB Output is correct
102 Correct 34 ms 70736 KB Output is correct
103 Correct 33 ms 70740 KB Output is correct
104 Correct 36 ms 70804 KB Output is correct
105 Correct 36 ms 70820 KB Output is correct
106 Correct 35 ms 70736 KB Output is correct
107 Correct 33 ms 70940 KB Output is correct
108 Correct 33 ms 70716 KB Output is correct
109 Correct 34 ms 70740 KB Output is correct
110 Correct 35 ms 70884 KB Output is correct
111 Correct 174 ms 124300 KB Output is correct
112 Correct 176 ms 121400 KB Output is correct
113 Correct 170 ms 127368 KB Output is correct
114 Correct 174 ms 128112 KB Output is correct
115 Correct 186 ms 126572 KB Output is correct
116 Correct 214 ms 175908 KB Output is correct
117 Correct 183 ms 128200 KB Output is correct
118 Correct 35 ms 71268 KB Output is correct
119 Correct 34 ms 71252 KB Output is correct
120 Correct 34 ms 71260 KB Output is correct
121 Correct 35 ms 71244 KB Output is correct
122 Correct 35 ms 71244 KB Output is correct
123 Correct 35 ms 71252 KB Output is correct
124 Correct 36 ms 71244 KB Output is correct
125 Correct 34 ms 71156 KB Output is correct
126 Correct 35 ms 71224 KB Output is correct
127 Correct 34 ms 71124 KB Output is correct
128 Correct 35 ms 71124 KB Output is correct
129 Correct 36 ms 71208 KB Output is correct
130 Correct 34 ms 71252 KB Output is correct
131 Correct 35 ms 70720 KB Output is correct
132 Correct 51 ms 79936 KB Output is correct
133 Correct 54 ms 79368 KB Output is correct
134 Correct 58 ms 82508 KB Output is correct
135 Correct 59 ms 84284 KB Output is correct
136 Correct 60 ms 84356 KB Output is correct
137 Correct 52 ms 79644 KB Output is correct
138 Correct 51 ms 79432 KB Output is correct
139 Correct 61 ms 86860 KB Output is correct
140 Correct 49 ms 78684 KB Output is correct
141 Correct 56 ms 79436 KB Output is correct
142 Correct 57 ms 79940 KB Output is correct
143 Correct 53 ms 79392 KB Output is correct
144 Correct 59 ms 81004 KB Output is correct
145 Correct 55 ms 79308 KB Output is correct
146 Correct 61 ms 84584 KB Output is correct
147 Correct 55 ms 80596 KB Output is correct
148 Correct 53 ms 78984 KB Output is correct
149 Correct 60 ms 85260 KB Output is correct
150 Correct 67 ms 86508 KB Output is correct
151 Correct 58 ms 83920 KB Output is correct
152 Correct 718 ms 278428 KB Output is correct
153 Correct 755 ms 309044 KB Output is correct
154 Correct 681 ms 294744 KB Output is correct
155 Correct 815 ms 343196 KB Output is correct
156 Correct 893 ms 305456 KB Output is correct
157 Correct 703 ms 284952 KB Output is correct
158 Correct 779 ms 318192 KB Output is correct
159 Correct 981 ms 436728 KB Output is correct
160 Correct 966 ms 416300 KB Output is correct
161 Correct 656 ms 283120 KB Output is correct
162 Correct 660 ms 281880 KB Output is correct