oj.uz

Submission #868562

# Submission time Handle Problem Language Result Execution time Memory
868562 2023-10-31T20:23:55 Z NaimSS The short shank; Redemption (BOI21_prison) C++14
100 / 100
 353 ms 256956 KB 
#include <bits/stdc++.h>
#define sz(v) ((int)v.size())
#define rep(i,a,b) for(int i=(a);i<(b);++i)
#define per(i,a,b) for(int i=(b)-1;i>=(a);--i)
#define pb push_back
#define ff first
#define ss second
#define endl '\n'
#define sz(v) ((int)v.size())
#define all(v) begin(v),end(v)
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;

void dbg_out() { cerr << endl ;}
template<typename Head, typename... Tail> void dbg_out(Head H,Tail... T){
	cerr<<' '<<H ;
	dbg_out(T...);
}
#ifdef LOCAL
#define dbg(...) cerr<<"("<< #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__), cerr << endl;
#else 
#define dbg(...) 42
#endif

const int N = 2e6 + 10;
int t[N];
int nxt[N];
int H[N];
int id[N];
int vis[N];
vi g[N];

void dfs(int v,int p=-1){
	if(p==-1)H[v] = 0;
	vis[v] = 1;
	for(auto to : g[v])if(to!=p){
		H[to] = H[v] + 1;
		assert(!vis[to]);
		dfs(to,v);
	}
}

int32_t main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	int n,d,T;
	cin >> n >> d >> T;
	rep(i,1,n+1)cin >> t[i];

	int ans = n;
	int Mx=0;

	stack<pii> S;
	int curId=0;
	for(int i=1;i<=n;i++){
		int cur = i + T - t[i];
		Mx = max(Mx,cur);
		if(!S.empty())S.top().ss = max(S.top().ss, cur);
		if(t[i] > T){
			if(Mx < i){
				ans--;
				continue;
			}
			int last = -1;
			while(!S.empty()){
				int cur = S.top().ff;
				last = max(last, S.top().ss);
				if(last >= i)break;
				dbg(cur , id[cur], last);
				nxt[id[cur]] = curId;
				S.pop();
			}
			S.push({i, -1});
			id[i] = curId++;
			nxt[id[i]] = -1;
			dbg(i,id[i]);
		}
	}
	for(int i=0;i<curId;i++){
		assert(nxt[i] == -1 || nxt[i] > i);
		if(nxt[i]!=-1){
			g[nxt[i]].pb(i);
		}
	}
	per(i,0,curId)if(!vis[i]){
		dfs(i);
	}
	vi ids;
	rep(i,0,curId)ids.pb(i);
	sort(all(ids),[&](int a,int b){
		return H[a] > H[b];
	});
	memset(vis,0,sizeof(vis));
	priority_queue<int> pq;
	for(auto i : ids){
		int val = 0;
		while(i!=-1 && !vis[i]){
			vis[i] = 1,val++;
			i = nxt[i];
		}
		pq.push(val);
	}
	while(d-- && sz(pq))ans -= pq.top(),pq.pop();
	cout << ans << endl;
}

Compilation message

prison.cpp: In function 'int32_t main()':
prison.cpp:25:18: warning: statement has no effect [-Wunused-value]
   25 | #define dbg(...) 42
      |                  ^~
prison.cpp:71:5: note: in expansion of macro 'dbg'
   71 |     dbg(cur , id[cur], last);
      |     ^~~
prison.cpp:25:18: warning: statement has no effect [-Wunused-value]
   25 | #define dbg(...) 42
      |                  ^~
prison.cpp:78:4: note: in expansion of macro 'dbg'
   78 |    dbg(i,id[i]);
      |    ^~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 62044 KB Output is correct
2 Correct 12 ms 62044 KB Output is correct
3 Correct 12 ms 62132 KB Output is correct
4 Correct 12 ms 62044 KB Output is correct
5 Correct 12 ms 62212 KB Output is correct
6 Correct 12 ms 62044 KB Output is correct
7 Correct 13 ms 62044 KB Output is correct
8 Correct 12 ms 62040 KB Output is correct
9 Correct 12 ms 62044 KB Output is correct
10 Correct 12 ms 62044 KB Output is correct
11 Correct 12 ms 62044 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 62040 KB Output is correct
2 Correct 71 ms 73628 KB Output is correct
3 Correct 62 ms 71248 KB Output is correct
4 Correct 71 ms 77532 KB Output is correct
5 Correct 76 ms 82632 KB Output is correct
6 Correct 71 ms 79304 KB Output is correct
7 Correct 110 ms 126016 KB Output is correct
8 Correct 71 ms 80740 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 62044 KB Output is correct
2 Correct 12 ms 62044 KB Output is correct
3 Correct 12 ms 62132 KB Output is correct
4 Correct 12 ms 62044 KB Output is correct
5 Correct 12 ms 62212 KB Output is correct
6 Correct 12 ms 62044 KB Output is correct
7 Correct 13 ms 62044 KB Output is correct
8 Correct 12 ms 62040 KB Output is correct
9 Correct 12 ms 62044 KB Output is correct
10 Correct 12 ms 62044 KB Output is correct
11 Correct 12 ms 62044 KB Output is correct
12 Correct 12 ms 62044 KB Output is correct
13 Correct 12 ms 62104 KB Output is correct
14 Correct 12 ms 62044 KB Output is correct
15 Correct 13 ms 62208 KB Output is correct
16 Correct 12 ms 62044 KB Output is correct
17 Correct 12 ms 62044 KB Output is correct
18 Correct 12 ms 62044 KB Output is correct
19 Correct 12 ms 62044 KB Output is correct
20 Correct 12 ms 62044 KB Output is correct
21 Correct 12 ms 62212 KB Output is correct
22 Correct 12 ms 62132 KB Output is correct
23 Correct 12 ms 62128 KB Output is correct
24 Correct 13 ms 62264 KB Output is correct
25 Correct 12 ms 62300 KB Output is correct
26 Correct 12 ms 62044 KB Output is correct
27 Correct 13 ms 62176 KB Output is correct
28 Correct 13 ms 62044 KB Output is correct
29 Correct 12 ms 62300 KB Output is correct
30 Correct 12 ms 62040 KB Output is correct
31 Correct 12 ms 62044 KB Output is correct
32 Correct 12 ms 62100 KB Output is correct
33 Correct 12 ms 62044 KB Output is correct
34 Correct 12 ms 62552 KB Output is correct
35 Correct 12 ms 62300 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 62196 KB Output is correct
2 Correct 24 ms 63712 KB Output is correct
3 Correct 22 ms 63448 KB Output is correct
4 Correct 25 ms 66268 KB Output is correct
5 Correct 24 ms 68188 KB Output is correct
6 Correct 25 ms 68312 KB Output is correct
7 Correct 19 ms 64080 KB Output is correct
8 Correct 20 ms 63836 KB Output is correct
9 Correct 24 ms 70684 KB Output is correct
10 Correct 20 ms 63452 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 62044 KB Output is correct
2 Correct 12 ms 62044 KB Output is correct
3 Correct 12 ms 62132 KB Output is correct
4 Correct 12 ms 62044 KB Output is correct
5 Correct 12 ms 62212 KB Output is correct
6 Correct 12 ms 62044 KB Output is correct
7 Correct 13 ms 62044 KB Output is correct
8 Correct 12 ms 62040 KB Output is correct
9 Correct 12 ms 62044 KB Output is correct
10 Correct 12 ms 62044 KB Output is correct
11 Correct 12 ms 62044 KB Output is correct
12 Correct 12 ms 62044 KB Output is correct
13 Correct 12 ms 62104 KB Output is correct
14 Correct 12 ms 62044 KB Output is correct
15 Correct 13 ms 62208 KB Output is correct
16 Correct 12 ms 62044 KB Output is correct
17 Correct 12 ms 62044 KB Output is correct
18 Correct 12 ms 62044 KB Output is correct
19 Correct 12 ms 62044 KB Output is correct
20 Correct 12 ms 62044 KB Output is correct
21 Correct 12 ms 62212 KB Output is correct
22 Correct 12 ms 62132 KB Output is correct
23 Correct 12 ms 62128 KB Output is correct
24 Correct 13 ms 62264 KB Output is correct
25 Correct 12 ms 62300 KB Output is correct
26 Correct 12 ms 62044 KB Output is correct
27 Correct 13 ms 62176 KB Output is correct
28 Correct 13 ms 62044 KB Output is correct
29 Correct 12 ms 62300 KB Output is correct
30 Correct 12 ms 62040 KB Output is correct
31 Correct 12 ms 62044 KB Output is correct
32 Correct 12 ms 62100 KB Output is correct
33 Correct 12 ms 62044 KB Output is correct
34 Correct 12 ms 62552 KB Output is correct
35 Correct 12 ms 62300 KB Output is correct
36 Correct 12 ms 62196 KB Output is correct
37 Correct 24 ms 63712 KB Output is correct
38 Correct 22 ms 63448 KB Output is correct
39 Correct 25 ms 66268 KB Output is correct
40 Correct 24 ms 68188 KB Output is correct
41 Correct 25 ms 68312 KB Output is correct
42 Correct 19 ms 64080 KB Output is correct
43 Correct 20 ms 63836 KB Output is correct
44 Correct 24 ms 70684 KB Output is correct
45 Correct 20 ms 63452 KB Output is correct
46 Correct 12 ms 62044 KB Output is correct
47 Correct 12 ms 62184 KB Output is correct
48 Correct 12 ms 62108 KB Output is correct
49 Correct 12 ms 62040 KB Output is correct
50 Correct 13 ms 62296 KB Output is correct
51 Correct 12 ms 62208 KB Output is correct
52 Correct 12 ms 62204 KB Output is correct
53 Correct 12 ms 62044 KB Output is correct
54 Correct 12 ms 62044 KB Output is correct
55 Correct 12 ms 62044 KB Output is correct
56 Correct 13 ms 62296 KB Output is correct
57 Correct 12 ms 62300 KB Output is correct
58 Correct 12 ms 62304 KB Output is correct
59 Correct 14 ms 62296 KB Output is correct
60 Correct 13 ms 62308 KB Output is correct
61 Correct 13 ms 62300 KB Output is correct
62 Correct 13 ms 62112 KB Output is correct
63 Correct 13 ms 62296 KB Output is correct
64 Correct 13 ms 62044 KB Output is correct
65 Correct 13 ms 62300 KB Output is correct
66 Correct 12 ms 62260 KB Output is correct
67 Correct 12 ms 62096 KB Output is correct
68 Correct 13 ms 62316 KB Output is correct
69 Correct 12 ms 62124 KB Output is correct
70 Correct 12 ms 62044 KB Output is correct
71 Correct 22 ms 64472 KB Output is correct
72 Correct 24 ms 64180 KB Output is correct
73 Correct 25 ms 66684 KB Output is correct
74 Correct 23 ms 68172 KB Output is correct
75 Correct 25 ms 68304 KB Output is correct
76 Correct 19 ms 64180 KB Output is correct
77 Correct 21 ms 63836 KB Output is correct
78 Correct 24 ms 70600 KB Output is correct
79 Correct 17 ms 63448 KB Output is correct
80 Correct 21 ms 64224 KB Output is correct
81 Correct 23 ms 64476 KB Output is correct
82 Correct 25 ms 64052 KB Output is correct
83 Correct 23 ms 65372 KB Output is correct
84 Correct 24 ms 64092 KB Output is correct
85 Correct 28 ms 68436 KB Output is correct
86 Correct 21 ms 64988 KB Output is correct
87 Correct 20 ms 63580 KB Output is correct
88 Correct 23 ms 68952 KB Output is correct
89 Correct 24 ms 70452 KB Output is correct
90 Correct 22 ms 67812 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 62044 KB Output is correct
2 Correct 12 ms 62044 KB Output is correct
3 Correct 12 ms 62132 KB Output is correct
4 Correct 12 ms 62044 KB Output is correct
5 Correct 12 ms 62212 KB Output is correct
6 Correct 12 ms 62044 KB Output is correct
7 Correct 13 ms 62044 KB Output is correct
8 Correct 12 ms 62040 KB Output is correct
9 Correct 12 ms 62044 KB Output is correct
10 Correct 12 ms 62044 KB Output is correct
11 Correct 12 ms 62044 KB Output is correct
12 Correct 12 ms 62040 KB Output is correct
13 Correct 71 ms 73628 KB Output is correct
14 Correct 62 ms 71248 KB Output is correct
15 Correct 71 ms 77532 KB Output is correct
16 Correct 76 ms 82632 KB Output is correct
17 Correct 71 ms 79304 KB Output is correct
18 Correct 110 ms 126016 KB Output is correct
19 Correct 71 ms 80740 KB Output is correct
20 Correct 12 ms 62044 KB Output is correct
21 Correct 12 ms 62104 KB Output is correct
22 Correct 12 ms 62044 KB Output is correct
23 Correct 13 ms 62208 KB Output is correct
24 Correct 12 ms 62044 KB Output is correct
25 Correct 12 ms 62044 KB Output is correct
26 Correct 12 ms 62044 KB Output is correct
27 Correct 12 ms 62044 KB Output is correct
28 Correct 12 ms 62044 KB Output is correct
29 Correct 12 ms 62212 KB Output is correct
30 Correct 12 ms 62132 KB Output is correct
31 Correct 12 ms 62128 KB Output is correct
32 Correct 13 ms 62264 KB Output is correct
33 Correct 12 ms 62300 KB Output is correct
34 Correct 12 ms 62044 KB Output is correct
35 Correct 13 ms 62176 KB Output is correct
36 Correct 13 ms 62044 KB Output is correct
37 Correct 12 ms 62300 KB Output is correct
38 Correct 12 ms 62040 KB Output is correct
39 Correct 12 ms 62044 KB Output is correct
40 Correct 12 ms 62100 KB Output is correct
41 Correct 12 ms 62044 KB Output is correct
42 Correct 12 ms 62552 KB Output is correct
43 Correct 12 ms 62300 KB Output is correct
44 Correct 12 ms 62196 KB Output is correct
45 Correct 24 ms 63712 KB Output is correct
46 Correct 22 ms 63448 KB Output is correct
47 Correct 25 ms 66268 KB Output is correct
48 Correct 24 ms 68188 KB Output is correct
49 Correct 25 ms 68312 KB Output is correct
50 Correct 19 ms 64080 KB Output is correct
51 Correct 20 ms 63836 KB Output is correct
52 Correct 24 ms 70684 KB Output is correct
53 Correct 20 ms 63452 KB Output is correct
54 Correct 12 ms 62044 KB Output is correct
55 Correct 12 ms 62184 KB Output is correct
56 Correct 12 ms 62108 KB Output is correct
57 Correct 12 ms 62040 KB Output is correct
58 Correct 13 ms 62296 KB Output is correct
59 Correct 12 ms 62208 KB Output is correct
60 Correct 12 ms 62204 KB Output is correct
61 Correct 12 ms 62044 KB Output is correct
62 Correct 12 ms 62044 KB Output is correct
63 Correct 12 ms 62044 KB Output is correct
64 Correct 13 ms 62296 KB Output is correct
65 Correct 12 ms 62300 KB Output is correct
66 Correct 12 ms 62304 KB Output is correct
67 Correct 14 ms 62296 KB Output is correct
68 Correct 13 ms 62308 KB Output is correct
69 Correct 13 ms 62300 KB Output is correct
70 Correct 13 ms 62112 KB Output is correct
71 Correct 13 ms 62296 KB Output is correct
72 Correct 13 ms 62044 KB Output is correct
73 Correct 13 ms 62300 KB Output is correct
74 Correct 12 ms 62260 KB Output is correct
75 Correct 12 ms 62096 KB Output is correct
76 Correct 13 ms 62316 KB Output is correct
77 Correct 12 ms 62124 KB Output is correct
78 Correct 12 ms 62044 KB Output is correct
79 Correct 22 ms 64472 KB Output is correct
80 Correct 24 ms 64180 KB Output is correct
81 Correct 25 ms 66684 KB Output is correct
82 Correct 23 ms 68172 KB Output is correct
83 Correct 25 ms 68304 KB Output is correct
84 Correct 19 ms 64180 KB Output is correct
85 Correct 21 ms 63836 KB Output is correct
86 Correct 24 ms 70600 KB Output is correct
87 Correct 17 ms 63448 KB Output is correct
88 Correct 21 ms 64224 KB Output is correct
89 Correct 23 ms 64476 KB Output is correct
90 Correct 25 ms 64052 KB Output is correct
91 Correct 23 ms 65372 KB Output is correct
92 Correct 24 ms 64092 KB Output is correct
93 Correct 28 ms 68436 KB Output is correct
94 Correct 21 ms 64988 KB Output is correct
95 Correct 20 ms 63580 KB Output is correct
96 Correct 23 ms 68952 KB Output is correct
97 Correct 24 ms 70452 KB Output is correct
98 Correct 22 ms 67812 KB Output is correct
99 Correct 12 ms 62040 KB Output is correct
100 Correct 12 ms 62044 KB Output is correct
101 Correct 12 ms 62128 KB Output is correct
102 Correct 12 ms 62040 KB Output is correct
103 Correct 12 ms 62044 KB Output is correct
104 Correct 12 ms 62044 KB Output is correct
105 Correct 12 ms 62044 KB Output is correct
106 Correct 12 ms 62044 KB Output is correct
107 Correct 12 ms 62216 KB Output is correct
108 Correct 14 ms 62044 KB Output is correct
109 Correct 12 ms 62040 KB Output is correct
110 Correct 12 ms 62044 KB Output is correct
111 Correct 78 ms 78532 KB Output is correct
112 Correct 67 ms 75976 KB Output is correct
113 Correct 85 ms 80936 KB Output is correct
114 Correct 75 ms 82624 KB Output is correct
115 Correct 73 ms 79292 KB Output is correct
116 Correct 97 ms 125928 KB Output is correct
117 Correct 87 ms 80696 KB Output is correct
118 Correct 12 ms 62296 KB Output is correct
119 Correct 13 ms 62300 KB Output is correct
120 Correct 12 ms 62300 KB Output is correct
121 Correct 13 ms 62296 KB Output is correct
122 Correct 13 ms 62300 KB Output is correct
123 Correct 13 ms 62300 KB Output is correct
124 Correct 13 ms 62300 KB Output is correct
125 Correct 12 ms 62044 KB Output is correct
126 Correct 14 ms 62296 KB Output is correct
127 Correct 13 ms 62260 KB Output is correct
128 Correct 13 ms 62044 KB Output is correct
129 Correct 12 ms 62300 KB Output is correct
130 Correct 13 ms 62132 KB Output is correct
131 Correct 12 ms 62088 KB Output is correct
132 Correct 22 ms 64428 KB Output is correct
133 Correct 21 ms 64216 KB Output is correct
134 Correct 25 ms 66644 KB Output is correct
135 Correct 24 ms 68140 KB Output is correct
136 Correct 24 ms 68312 KB Output is correct
137 Correct 22 ms 64344 KB Output is correct
138 Correct 21 ms 63860 KB Output is correct
139 Correct 25 ms 70604 KB Output is correct
140 Correct 17 ms 63448 KB Output is correct
141 Correct 22 ms 64088 KB Output is correct
142 Correct 25 ms 64464 KB Output is correct
143 Correct 22 ms 64180 KB Output is correct
144 Correct 26 ms 65372 KB Output is correct
145 Correct 20 ms 64092 KB Output is correct
146 Correct 27 ms 68424 KB Output is correct
147 Correct 22 ms 64988 KB Output is correct
148 Correct 20 ms 63576 KB Output is correct
149 Correct 23 ms 68944 KB Output is correct
150 Correct 24 ms 70352 KB Output is correct
151 Correct 23 ms 67776 KB Output is correct
152 Correct 264 ms 132124 KB Output is correct
153 Correct 277 ms 144500 KB Output is correct
154 Correct 291 ms 129132 KB Output is correct
155 Correct 294 ms 173724 KB Output is correct
156 Correct 273 ms 140680 KB Output is correct
157 Correct 215 ms 117436 KB Output is correct
158 Correct 245 ms 147372 KB Output is correct
159 Correct 353 ms 256956 KB Output is correct
160 Correct 336 ms 238000 KB Output is correct
161 Correct 195 ms 110528 KB Output is correct
162 Correct 195 ms 112828 KB Output is correct