oj.uz

Submission #296404

# Submission time Handle Problem Language Result Execution time Memory
296404 2020-09-10T14:20:46 Z theStaticMind Sky Walking (IOI19_walk) C++14
10 / 100
 4000 ms 100312 KB 
#include <bits/stdc++.h>
#include "walk.h"
using namespace std;
#define ii pair<int,int>

vector<int>E[100000], B[100000];
vector<ii> adj[100000];

long long min_distance(std::vector<int> x, std::vector<int> h, std::vector<int> l, std::vector<int> r, std::vector<int> y, int s, int g) {
	map<int, int> curr;
	priority_queue<pair<long long, ii>> Q;
	map<ii, long long> val;
	set<ii> vis;

	for(int i = 0; i < r.size(); i++){
		E[r[i]].push_back(y[i]);
		B[l[i]].push_back(y[i]);
	}

	for(int i = 0; i < x.size(); i++){

		for(auto& Y : curr){
			if(Y.first > h[i]) break;

			adj[i].push_back({Y.second, Y.first});
			adj[Y.second].push_back({i, Y.first});

			Y.second = i;
		}

		for(auto Y : E[i]) curr.erase(Y);
		for(auto Y : B[i]) curr[Y] = i;
	}

	val[{s, 0}] = 0;
	Q.push({0, {s, 0}});

	while(!Q.empty()){
		ii p = Q.top().second;
		Q.pop();
		if(vis.count(p)) continue;
		vis.insert(p);
		for(auto y : adj[p.first]){
			if(vis.count(y) || (val.count(y) && val[y] <= val[p] + abs(p.second - y.second) + abs(x[p.first] - x[y.first]))) continue;
			val[y] = val[p] + abs(p.second - y.second) + abs(x[p.first] - x[y.first]);
			Q.push({-val[y], y});
		}
	}
	long long ans = 1e18;
	for(auto p : val){
		if(p.first.first == g) ans = min(ans, p.second + p.first.second);
	}
	if(ans == 1e18) return -1;
	return ans;
}

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:15:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for(int i = 0; i < r.size(); i++){
      |                 ~~^~~~~~~~~~
walk.cpp:20:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |  for(int i = 0; i < x.size(); i++){
      |                 ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7296 KB Output is correct
2 Correct 5 ms 7296 KB Output is correct
3 Correct 5 ms 7296 KB Output is correct
4 Correct 5 ms 7296 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 7 ms 7424 KB Output is correct
7 Correct 7 ms 7424 KB Output is correct
8 Correct 7 ms 7424 KB Output is correct
9 Correct 6 ms 7424 KB Output is correct
10 Correct 10 ms 7424 KB Output is correct
11 Correct 5 ms 7424 KB Output is correct
12 Correct 6 ms 7552 KB Output is correct
13 Correct 6 ms 7424 KB Output is correct
14 Correct 5 ms 7296 KB Output is correct
15 Correct 5 ms 7296 KB Output is correct
16 Correct 5 ms 7424 KB Output is correct
17 Correct 10 ms 7424 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7296 KB Output is correct
2 Correct 5 ms 7296 KB Output is correct
3 Execution timed out 4078 ms 46868 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 182 ms 17644 KB Output is correct
2 Execution timed out 4086 ms 100312 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 182 ms 17644 KB Output is correct
2 Execution timed out 4086 ms 100312 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7296 KB Output is correct
2 Correct 5 ms 7296 KB Output is correct
3 Correct 5 ms 7296 KB Output is correct
4 Correct 5 ms 7296 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 7 ms 7424 KB Output is correct
7 Correct 7 ms 7424 KB Output is correct
8 Correct 7 ms 7424 KB Output is correct
9 Correct 6 ms 7424 KB Output is correct
10 Correct 10 ms 7424 KB Output is correct
11 Correct 5 ms 7424 KB Output is correct
12 Correct 6 ms 7552 KB Output is correct
13 Correct 6 ms 7424 KB Output is correct
14 Correct 5 ms 7296 KB Output is correct
15 Correct 5 ms 7296 KB Output is correct
16 Correct 5 ms 7424 KB Output is correct
17 Correct 10 ms 7424 KB Output is correct
18 Correct 5 ms 7296 KB Output is correct
19 Correct 5 ms 7296 KB Output is correct
20 Execution timed out 4078 ms 46868 KB Time limit exceeded
21 Halted 0 ms 0 KB -