oj.uz

Submission #125294

# Submission time Handle Problem Language Result Execution time Memory
125294 2019-07-05T04:54:55 Z 구재현(#3066) Long Mansion (JOI17_long_mansion) C++14
100 / 100
 712 ms 116044 KB 
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 500005;
using lint = long long;
using pi = pair<int, int>;

int n, c[MAXN];
vector<int> key_loc[MAXN];

int L[20][MAXN], R[20][MAXN];
int up[MAXN], dn[MAXN];
pi rng[MAXN];

int main(){
	scanf("%d",&n);
	for(int i=1; i<n; i++) scanf("%d",&c[i]);
	for(int i=1; i<=n; i++){
		int x; scanf("%d",&x);
		for(int j=0; j<x; j++){
			int y; scanf("%d",&y);
			key_loc[y].push_back(i);
		}
	}
	for(int i=1; i<n; i++){
		auto p = lower_bound(key_loc[c[i]].begin(), key_loc[c[i]].end(), i + 1);
		if(p == key_loc[c[i]].end()) R[0][i] = n + 1;
		else R[0][i] = *p;
		if(p == key_loc[c[i]].begin()) L[0][i] = 0;
		else L[0][i] = *prev(p);
	}
	R[0][0] = n + 1;
	L[0][n + 1] = 0;
	for(int i=1; i<20; i++){
		for(int j=0; j<=n+1; j++){
			L[i][j] = L[i-1][j];
			R[i][j] = R[i-1][j];
			if(j >= (1 << (i - 1))){
				L[i][j] = min(L[i][j], L[i-1][j - (1 << (i-1))]);
				R[i][j] = max(R[i][j], R[i-1][j - (1 << (i-1))]);
			}
		}
	}
	memset(dn, 0x3f, sizeof(dn));
	for(int i=1; i<=n; i++){
		int pos = R[0][i - 1] - 1;
		for(int j=19; j>=0; j--){
			if(pos >= (1 << j) && L[j][pos] >= i){
				pos -= (1 << j);
			}
		}
		if(L[0][pos] >= i) pos--;
		if(pos >= i) up[i] = max(up[i], pos);
	}
	for(int i=1; i<=n; i++){
		int pos = L[0][i];
		for(int j=19; j>=0; j--){
			if(pos + (1 << j) <= n && R[j][pos + (1<<j) - 1] <= i){
				pos += (1 << j);
			}
		}
		if(R[0][pos] <= i) pos++;
		pos++;
		if(pos <= i) dn[i] = min(dn[i], pos);
	}
	vector<pi> stk;
	for(int i=1; i<=n; i++){
		while(!stk.empty() && stk.back().first <= max(i - 1, up[i])){
			stk.pop_back();
		}
		if(up[i] >= i) stk.emplace_back(up[i], i);
		if(stk.size()) rng[i].first = stk.back().second;
		else rng[i].first = 1;
	}
	stk.clear();
	for(int i=n; i; i--){
		while(!stk.empty() && stk.back().first >= min(i + 1, dn[i])){
			stk.pop_back();
		}
		if(dn[i] <= i) stk.emplace_back(dn[i], i);
		if(stk.size()) rng[i].second = stk.back().second;
		else rng[i].second = n;
	}
	int q; scanf("%d",&q);
	while(q--){
		int x, y; scanf("%d %d",&x,&y);
		puts(rng[x].first <= y && y <= rng[x].second ? "YES" : "NO");
	}
}

Compilation message

long_mansion.cpp: In function 'int main()':
long_mansion.cpp:15:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
long_mansion.cpp:16:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1; i<n; i++) scanf("%d",&c[i]);
                         ~~~~~^~~~~~~~~~~~
long_mansion.cpp:18:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int x; scanf("%d",&x);
          ~~~~~^~~~~~~~~
long_mansion.cpp:20:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    int y; scanf("%d",&y);
           ~~~~~^~~~~~~~~
long_mansion.cpp:83:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int q; scanf("%d",&q);
         ~~~~~^~~~~~~~~
long_mansion.cpp:85:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int x, y; scanf("%d %d",&x,&y);
             ~~~~~^~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 14712 KB Output is correct
2 Correct 18 ms 14968 KB Output is correct
3 Correct 19 ms 15352 KB Output is correct
4 Correct 17 ms 14840 KB Output is correct
5 Correct 17 ms 14712 KB Output is correct
6 Correct 17 ms 14840 KB Output is correct
7 Correct 17 ms 14840 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 14712 KB Output is correct
2 Correct 18 ms 14968 KB Output is correct
3 Correct 19 ms 15352 KB Output is correct
4 Correct 17 ms 14840 KB Output is correct
5 Correct 17 ms 14712 KB Output is correct
6 Correct 17 ms 14840 KB Output is correct
7 Correct 17 ms 14840 KB Output is correct
8 Correct 146 ms 16200 KB Output is correct
9 Correct 144 ms 16248 KB Output is correct
10 Correct 148 ms 16624 KB Output is correct
11 Correct 147 ms 17032 KB Output is correct
12 Correct 135 ms 16248 KB Output is correct
13 Correct 141 ms 16508 KB Output is correct
14 Correct 142 ms 16504 KB Output is correct
15 Correct 140 ms 16520 KB Output is correct
16 Correct 133 ms 16664 KB Output is correct
17 Correct 141 ms 16632 KB Output is correct
18 Correct 141 ms 16476 KB Output is correct
19 Correct 140 ms 16504 KB Output is correct
20 Correct 138 ms 16632 KB Output is correct
21 Correct 134 ms 16760 KB Output is correct
22 Correct 141 ms 16504 KB Output is correct
23 Correct 141 ms 16376 KB Output is correct
24 Correct 141 ms 16460 KB Output is correct
25 Correct 141 ms 16456 KB Output is correct
26 Correct 142 ms 16376 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 284 ms 41132 KB Output is correct
2 Correct 285 ms 42528 KB Output is correct
3 Correct 274 ms 42360 KB Output is correct
4 Correct 281 ms 42616 KB Output is correct
5 Correct 277 ms 42832 KB Output is correct
6 Correct 238 ms 40952 KB Output is correct
7 Correct 232 ms 40824 KB Output is correct
8 Correct 230 ms 40728 KB Output is correct
9 Correct 242 ms 40872 KB Output is correct
10 Correct 232 ms 40572 KB Output is correct
11 Correct 234 ms 40440 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 14712 KB Output is correct
2 Correct 18 ms 14968 KB Output is correct
3 Correct 19 ms 15352 KB Output is correct
4 Correct 17 ms 14840 KB Output is correct
5 Correct 17 ms 14712 KB Output is correct
6 Correct 17 ms 14840 KB Output is correct
7 Correct 17 ms 14840 KB Output is correct
8 Correct 146 ms 16200 KB Output is correct
9 Correct 144 ms 16248 KB Output is correct
10 Correct 148 ms 16624 KB Output is correct
11 Correct 147 ms 17032 KB Output is correct
12 Correct 135 ms 16248 KB Output is correct
13 Correct 141 ms 16508 KB Output is correct
14 Correct 142 ms 16504 KB Output is correct
15 Correct 140 ms 16520 KB Output is correct
16 Correct 133 ms 16664 KB Output is correct
17 Correct 141 ms 16632 KB Output is correct
18 Correct 141 ms 16476 KB Output is correct
19 Correct 140 ms 16504 KB Output is correct
20 Correct 138 ms 16632 KB Output is correct
21 Correct 134 ms 16760 KB Output is correct
22 Correct 141 ms 16504 KB Output is correct
23 Correct 141 ms 16376 KB Output is correct
24 Correct 141 ms 16460 KB Output is correct
25 Correct 141 ms 16456 KB Output is correct
26 Correct 142 ms 16376 KB Output is correct
27 Correct 284 ms 41132 KB Output is correct
28 Correct 285 ms 42528 KB Output is correct
29 Correct 274 ms 42360 KB Output is correct
30 Correct 281 ms 42616 KB Output is correct
31 Correct 277 ms 42832 KB Output is correct
32 Correct 238 ms 40952 KB Output is correct
33 Correct 232 ms 40824 KB Output is correct
34 Correct 230 ms 40728 KB Output is correct
35 Correct 242 ms 40872 KB Output is correct
36 Correct 232 ms 40572 KB Output is correct
37 Correct 234 ms 40440 KB Output is correct
38 Correct 684 ms 99432 KB Output is correct
39 Correct 712 ms 116044 KB Output is correct
40 Correct 531 ms 81368 KB Output is correct
41 Correct 547 ms 113616 KB Output is correct
42 Correct 279 ms 42360 KB Output is correct
43 Correct 275 ms 42360 KB Output is correct
44 Correct 425 ms 64008 KB Output is correct
45 Correct 416 ms 64220 KB Output is correct
46 Correct 419 ms 64684 KB Output is correct
47 Correct 265 ms 42232 KB Output is correct
48 Correct 256 ms 41968 KB Output is correct
49 Correct 380 ms 62960 KB Output is correct
50 Correct 390 ms 63404 KB Output is correct
51 Correct 415 ms 64460 KB Output is correct
52 Correct 335 ms 65348 KB Output is correct
53 Correct 426 ms 87132 KB Output is correct
54 Correct 513 ms 109420 KB Output is correct
55 Correct 430 ms 87364 KB Output is correct