oj.uz

Submission #1050536

# Submission time Handle Problem Language Result Execution time Memory
1050536 2024-08-09T10:35:54 Z NotLinux Sky Walking (IOI19_walk) C++17
15 / 100
 958 ms 680916 KB 
#include <bits/stdc++.h>
#include "walk.h"
using namespace std;
#define sz(x) (long long)x.size()
#define all(x) x.begin() , x.end()
const long long N = 1e18 + 7;
const long long inf = 1e18 + 7;
struct Segt{// range add update , range min query , polong long set update
	struct Node{
		long long left , right;
		long long val , lzt;
		Node():left(-1) , right(-1) , val(inf) , lzt(0ll){}
	} dummy;
	vector < Node > tree;
	long long create_node(){
		tree.push_back(dummy);
		return sz(tree) - 1;
	}
	Segt(){
		tree.resize(1);
	}
	void push(long long ind , long long l , long long r){
		if(tree[ind].lzt){
			tree[ind].val += tree[ind].lzt;
			if(tree[ind].left == -1)tree[ind].left = create_node();
			tree[tree[ind].left].lzt += tree[ind].lzt;
			if(tree[ind].right == -1)tree[ind].right = create_node();
			tree[tree[ind].right].lzt += tree[ind].lzt;
			tree[ind].lzt = 0;
		}
	}
	void set(long long ind , long long l , long long r , long long p , long long v){
		push(ind,l,r);
		if(l == r){
			tree[ind].val = v;
			return;			
		}
		long long mid = (l + r) / 2;
		if(tree[ind].left == -1)tree[ind].left = create_node();
		if(tree[ind].right == -1)tree[ind].right = create_node();
		if(mid >= p){
			set(tree[ind].left , l , mid , p , v);
		}
		else{
			set(tree[ind].right , mid+1 , r , p , v);
		}
		push(tree[ind].left , l , mid);
		push(tree[ind].right , mid+1 , r);
		tree[ind].val = min(tree[tree[ind].left].val , tree[tree[ind].right].val);
	}
	void set(long long p , long long v){
		set(0 , 0 , N , p , v);
	}
	void add(long long ind , long long l , long long r , long long ql , long long qr , long long qv){
		push(ind,l,r);
		if(l >= ql and r <= qr){
			tree[ind].lzt += qv;
			push(ind,l,r);
			return;
		}
		else if(l > qr or r < ql){
			return;
		}
		long long mid = (l + r) / 2;
		if(tree[ind].left == -1)tree[ind].left = create_node();
		if(tree[ind].right == -1)tree[ind].right = create_node();
		add(tree[ind].left , l , mid , ql , qr , qv);
		add(tree[ind].right , mid+1 , r , ql , qr , qv);
		tree[ind].val = min(tree[tree[ind].left].val , tree[tree[ind].right].val);
	}
	void add(long long l , long long r , long long v){
		add(0 , 0 , N , l , r , v);
	}
	long long query(long long ind , long long l , long long r , long long ql , long long qr){
		if(ind == -1)return inf;
		push(ind,l,r);
		if(l >= ql and r <= qr){
			return tree[ind].val;
		}
		else if(l > qr or r < ql)return inf;
		else{
			long long mid = (l + r) / 2;
			return min(query(tree[ind].left , l , mid , ql , qr) , query(tree[ind].right , mid+1 , r , ql , qr));
		}
	}
	long long query(long long l , long long r){
		return query(0 , 0 , N , l , r);
	}
};
long long min_distance(vector<int> X, vector<int> H, vector<int> L, vector<int> R, vector<int> Y, int S, int G) {
	vector < long long > range_start[sz(X)] , range_end[sz(X)];
	for(long long i = 0;i<sz(L);i++){
		range_start[L[i]].push_back(i);
		range_end[R[i]].push_back(i);
	}
	Segt segt_top , segt_down;
	segt_top.set(0 , 0);
	segt_down.set(0 , 0);
	long long ans = inf;
	for(long long i = 0;i<sz(X);i++){
		set < long long > fuck;
		vector < long long > make_updates;
		for(auto itr : range_start[i]){
			// cout << "STARTED : " << L[itr] << " , " << R[itr] << " , " << Y[itr] << endl;
			fuck.insert(Y[itr]);
			long long min_distance = min(segt_top.query(Y[itr] , H[i]) - Y[itr], segt_down.query(0 , Y[itr]) + Y[itr]);
			// cout << "min_distance : " << min_distance << endl;
			make_updates.push_back(min_distance);
		}
		for(long long j = 0;j<sz(range_start[i]);j++){
			segt_top.set(Y[range_start[i][j]] , make_updates[j] + Y[range_start[i][j]]);
			segt_down.set(Y[range_start[i][j]] , make_updates[j] - Y[range_start[i][j]]);
		}
		if(i != (sz(X)-1)){
			for(auto itr : range_end[i]){
				if(fuck.count(Y[itr]) == 0){
					// cout << "ENDED : " << L[itr] << " , " << R[itr] << endl;
					segt_top.set(Y[itr] , inf);
					segt_down.set(Y[itr] , inf);
				}
			}
		}
		if(i == 0){
			segt_top.set(0 , inf);
			segt_down.set(0 , inf);
		}
		if(i != (sz(X)-1)){
			segt_top.add(1 , N , X[i+1] - X[i]);
			segt_down.add(1 , N , X[i+1] - X[i]);
		}
		// cout << "Segt : ";for(long long i = 0;i<=10;i++)cout << segt_top.query(i,i) << " ";cout << endl;
		// cout << X[i] << " : " << segt_top.query(0 , N) << endl;
		// if(segt_top.query(0 , N) >= inf){
		// 	cout << "stop : " << X[i] << endl;
		// 	return 0ll;
		// }
	}
	long long ret = segt_top.query(0 , H[sz(H) - 1]); 
	if(ret < inf)return ret;
	else return -1;
}
// signed main() {
// 	long long n, m;
// 	cin >> n >> m;
// 	vector<long long> x(n), h(n);
// 	for (long long i = 0; i < n; i++)
// 		cin >> x[i] >> h[i];
// 	vector<long long> l(m), r(m), y(m);
// 	for (long long i = 0; i < m; i++)
// 		cin >> l[i] >> r[i] >> y[i];
// 	long long s, g;
// 	cin >> s >> g;
// 	long long result = min_distance(x, h, l, r, y, s, g);
// 	cout << "result : " << result << endl;
// }

Compilation message

walk.cpp: In function 'long long int min_distance(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, int, int)':
walk.cpp:99:12: warning: unused variable 'ans' [-Wunused-variable]
   99 |  long long ans = inf;
      |            ^~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 3660 KB Output is correct
2 Correct 762 ms 399540 KB Output is correct
3 Correct 713 ms 400328 KB Output is correct
4 Correct 912 ms 409296 KB Output is correct
5 Correct 903 ms 407860 KB Output is correct
6 Correct 831 ms 408796 KB Output is correct
7 Correct 436 ms 208060 KB Output is correct
8 Correct 754 ms 411164 KB Output is correct
9 Correct 738 ms 409660 KB Output is correct
10 Correct 403 ms 28476 KB Output is correct
11 Correct 63 ms 3992 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 3660 KB Output is correct
2 Correct 762 ms 399540 KB Output is correct
3 Correct 713 ms 400328 KB Output is correct
4 Correct 912 ms 409296 KB Output is correct
5 Correct 903 ms 407860 KB Output is correct
6 Correct 831 ms 408796 KB Output is correct
7 Correct 436 ms 208060 KB Output is correct
8 Correct 754 ms 411164 KB Output is correct
9 Correct 738 ms 409660 KB Output is correct
10 Correct 403 ms 28476 KB Output is correct
11 Correct 63 ms 3992 KB Output is correct
12 Correct 755 ms 413384 KB Output is correct
13 Correct 938 ms 484060 KB Output is correct
14 Correct 958 ms 452524 KB Output is correct
15 Correct 530 ms 138444 KB Output is correct
16 Correct 676 ms 335708 KB Output is correct
17 Correct 745 ms 335820 KB Output is correct
18 Correct 524 ms 138372 KB Output is correct
19 Correct 646 ms 335768 KB Output is correct
20 Correct 541 ms 343916 KB Output is correct
21 Correct 135 ms 19352 KB Output is correct
22 Correct 633 ms 365824 KB Output is correct
23 Correct 634 ms 369160 KB Output is correct
24 Correct 645 ms 379536 KB Output is correct
25 Correct 709 ms 472760 KB Output is correct
26 Correct 715 ms 425528 KB Output is correct
27 Correct 950 ms 470864 KB Output is correct
28 Correct 866 ms 479060 KB Output is correct
29 Correct 917 ms 487692 KB Output is correct
30 Correct 514 ms 344604 KB Output is correct
31 Correct 928 ms 680916 KB Output is correct
32 Correct 389 ms 21840 KB Output is correct
33 Incorrect 413 ms 21856 KB Output isn't correct
34 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -