oj.uz

Submission #972357

# Submission time Handle Problem Language Result Execution time Memory
972357 2024-04-30T11:26:34 Z Syrius Rainforest Jumps (APIO21_jumps) C++14
0 / 100
 16 ms 33880 KB 
#include <bits/stdc++.h>
#include "jumps.h"
using namespace std;

// #define int long long
#define ll long long
#define ff first
#define ss second
#define pint pair < int , int >
#define fast ios_base::sync_with_stdio(NULL); cin.tie(NULL)
typedef vector < int > vint;

const int inf = 1e9 + 9;
const int mxn = 2e5 + 2;
const int mod = 1e9 + 7;

int n;
int h[mxn] , le[mxn] , ri[mxn];
int inv[mxn];
int spx[19][mxn] , spn[19][mxn];

void init(int N , vint H) {
	n = N;
	vint v;
	for (int i = 0; i < n; i++) {
		h[i] = H[i];
		inv[h[i]] = i;
	}

	for (int i = 0; i < n; i++) {
		if (!v.empty()) {
			while (v.back() < h[i]) {
				ri[v.back()] = h[i];
				v.pop_back();
			}
		}
		if (!v.empty()) le[h[i]] = v.back();
		v.push_back(h[i]);
	}

	for (int i = 0; i < n; i++) {
		// cout << h[i] << ": " << le[h[i]] << ' ' << ri[h[i]] << '\n';
		spx[0][h[i]] = max(le[h[i]] , ri[h[i]]);
		spn[0][h[i]] = min(le[h[i]] , ri[h[i]]);
		if (spn[0][h[i]] == 0) spn[0][h[i]] = spx[0][h[i]];
	}

	for (int j = 1; j < 19; j++) {
		for (int i = 0; i < n; i++) {
			spx[j][h[i]] = spx[j-1][spx[j-1][h[i]]];
			spn[j][h[i]] = spn[j-1][spn[j-1][h[i]]];
		}
	}
}

int minimum_jumps(int a , int b , int c , int d) {
	// if (h[a] > h[d]) return -1;
	// int dis = 0;
	// for (int i = 18; i >= 0; i--) {
	// 	if (spx[i][h[a]] > h[d] || spx[i][h[a]] == 0) continue;
	// 	if (spx[i][h[a]] == h[d]) return (1 << i);
	// 	int t = minimum_jumps(inv[spx[i][h[a]]] , b , c , d);
	// 	return (t == -1) ? t : ((1<<i) + t);
	// }

	// for (int i = 18; i >= 0; i--) {
	// 	if (spn[i][h[a]] > h[d] || spn[i][h[a]] == 0) continue;
	// 	if (spn[i][h[a]] == h[d]) return (1 << i);
	// 	int t = minimum_jumps(inv[spn[i][h[a]]] , b , c , d);
	// 	return (t == -1) ? t : ((1<<i) + t);
	// }

	return -1;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 16 ms 33880 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Runtime error 16 ms 33880 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Runtime error 16 ms 33880 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 16 ms 33880 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Runtime error 16 ms 33880 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #6
0 / 21.0

# Verdict Execution time Memory Grader output
1 Runtime error 16 ms 33880 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #7
0 / 19.0

# Verdict Execution time Memory Grader output
1 Runtime error 16 ms 33880 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -