oj.uz

Submission #1069634

# Submission time Handle Problem Language Result Execution time Memory
1069634 2024-08-22T07:33:38 Z 김은성(#11131) Passport (JOI23_passport) C++17
48 / 100
 2000 ms 170392 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll KEY = 1.557e8;
const int INF = 1.557e8;
unordered_map<ll, int> memo;
int lb[200009], rb[200009];
int n, minl[1<<19], maxr[1<<19];
int tree[1<<19];
void update(int v, int l, int r, int idx, int val){
	if(l==r)
		tree[v] = val;
	else{
		int mid = (l+r)/2;
		if(idx <= mid)
			update(2*v, l, mid, idx, val);
		else
			update(2*v+1, mid+1, r, idx, val);
		tree[v] = min(tree[2*v], tree[2*v+1]);
	}
}
int rangemin(int v, int l, int r, int s, int e){
	if(e<l || r<s)
		return INF;
	if(s<=l && r<=e)
		return tree[v];
	int mid = (l+r)/2;
	return min(rangemin(2*v, l, mid, s, e), rangemin(2*v+1, mid+1, r, s, e));
}
void settree(int v, int l, int r){
	if(l==r){
		minl[v] = lb[l];
		maxr[v] = rb[l];
	}
	else{
		int mid = (l+r)/2;
		settree(2*v, l, mid);
		settree(2*v+1, mid+1, r);
		minl[v] = min(minl[2*v], minl[2*v+1]);
		maxr[v] = max(maxr[2*v], maxr[2*v+1]);
	}
}
int minquery(int v, int l, int r, int s, int e){
	if(e<l || r<s)
		return INF;
	if(s<=l && r<=e)
		return minl[v];
	int mid = (l+r)/2;
	return min(minquery(2*v, l, mid, s, e), minquery(2*v+1, mid+1, r, s, e));
}
int maxquery(int v, int l, int r, int s, int e){
	if(e<l || r<s)
		return -1;
	if(s<=l && r<=e)
		return maxr[v];
	int mid = (l+r)/2;
	return max(maxquery(2*v, l, mid, s, e), maxquery(2*v+1, mid+1, r, s, e));
}
int solve(int l, int r){
	if(l==1 && r==n)
		return 0;
	auto it = memo.find(((ll)l<<30) + r);
	if(it != memo.end())
		return it->second;
	int pl = minquery(1, 1, n, l, r), pr = maxquery(1, 1, n, l, r);
	//printf("l=%d r=%d pl=%d pr=%d\n",l, r, pl,pr);
	int ret = INF;
	if(pl < l)
		ret = min(ret, solve(pl, r) + 1);
	if(pr > r)
		ret = min(ret, solve(l, pr) + 1);
	ret = min(ret, rangemin(1, 1, n, l, r));
	return memo[((ll)l<<30) +r] = ret;
}
int ans[200009];
int main(){
	int q, t, i, j, k, x;
	scanf("%d", &n);
	for(i=1; i<=n; i++){
		scanf("%d %d", &lb[i], &rb[i]);
	}
	memset(tree, 127, sizeof(tree));
	settree(1,1, n);
	scanf("%d", &q);
	vector<int> vec;
	for(i=1; i<=n; i++)
		vec.push_back(i);
	sort(vec.begin(), vec.end(), [](int &u, int &v){return rb[v]-lb[v] < rb[u]-lb[u];});
	for(int u: vec){
		ans[u] = solve(lb[u], rb[u]) + 1;
		update(1, 1, n, u, ans[u]);
	}
	while(q--){
		scanf("%d", &x);
		if(ans[x] >= INF/2)
			ans[x] = -1;
		printf("%d\n", ans[x]);
	}
	return 0;
}

Compilation message

passport.cpp: In function 'int main()':
passport.cpp:77:9: warning: unused variable 't' [-Wunused-variable]
   77 |  int q, t, i, j, k, x;
      |         ^
passport.cpp:77:15: warning: unused variable 'j' [-Wunused-variable]
   77 |  int q, t, i, j, k, x;
      |               ^
passport.cpp:77:18: warning: unused variable 'k' [-Wunused-variable]
   77 |  int q, t, i, j, k, x;
      |                  ^
passport.cpp:78:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
passport.cpp:80:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   80 |   scanf("%d %d", &lb[i], &rb[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
passport.cpp:84:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   84 |  scanf("%d", &q);
      |  ~~~~~^~~~~~~~~~
passport.cpp:94:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   94 |   scanf("%d", &x);
      |   ~~~~~^~~~~~~~~~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 642 ms 33920 KB Output is correct
5 Execution timed out 2076 ms 100744 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 2 ms 8792 KB Output is correct
12 Correct 5 ms 9044 KB Output is correct
13 Correct 3 ms 8796 KB Output is correct
14 Correct 1 ms 8540 KB Output is correct
15 Correct 5 ms 9052 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 2 ms 8792 KB Output is correct
12 Correct 5 ms 9044 KB Output is correct
13 Correct 3 ms 8796 KB Output is correct
14 Correct 1 ms 8540 KB Output is correct
15 Correct 5 ms 9052 KB Output is correct
16 Correct 6 ms 8796 KB Output is correct
17 Correct 296 ms 28608 KB Output is correct
18 Correct 115 ms 18156 KB Output is correct
19 Correct 8 ms 9052 KB Output is correct
20 Correct 1396 ms 170328 KB Output is correct
21 Correct 341 ms 41892 KB Output is correct
22 Correct 3 ms 2392 KB Output is correct
23 Correct 8 ms 8284 KB Output is correct
24 Correct 3 ms 8796 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Correct 2 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 1 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 1 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 2 ms 8792 KB Output is correct
12 Correct 5 ms 9044 KB Output is correct
13 Correct 3 ms 8796 KB Output is correct
14 Correct 1 ms 8540 KB Output is correct
15 Correct 5 ms 9052 KB Output is correct
16 Correct 6 ms 8796 KB Output is correct
17 Correct 296 ms 28608 KB Output is correct
18 Correct 115 ms 18156 KB Output is correct
19 Correct 8 ms 9052 KB Output is correct
20 Correct 1396 ms 170328 KB Output is correct
21 Correct 341 ms 41892 KB Output is correct
22 Correct 3 ms 2392 KB Output is correct
23 Correct 8 ms 8284 KB Output is correct
24 Correct 3 ms 8796 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 6 ms 2928 KB Output is correct
28 Correct 291 ms 28344 KB Output is correct
29 Correct 1356 ms 170392 KB Output is correct
30 Correct 372 ms 41664 KB Output is correct
31 Correct 4 ms 8792 KB Output is correct

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 642 ms 33920 KB Output is correct
5 Execution timed out 2076 ms 100744 KB Time limit exceeded
6 Halted 0 ms 0 KB -