oj.uz

Submission #1048790

# Submission time Handle Problem Language Result Execution time Memory
1048790 2024-08-08T09:33:18 Z mychecksedad Sky Walking (IOI19_walk) C++17
0 / 100
 1641 ms 697840 KB 
#include "walk.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define pb push_back
#define vi vector<int>
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
const int N = 1e5+100;

int n, m;
map<pair<int, int>, int> node;
vector<pair<int,int>> G[N];
vector<int> F[N];
vector<pair<int, ll>> g[N];
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 gg) {
	n = x.size();
	m = l.size();
	for(int i = 0; i < m; ++i){
		int u = l[i], v = r[i], L = y[i];
		F[u].pb(L);
		F[v].pb(L);
		G[u].pb({v, L});
		G[v].pb({u, L});
	}
	int co = 0;
	for(int i = 0; i < n; ++i){
		for(auto U: G[i]){
			int u = U.ff; ll w = U.ss;
			if(u > i){
				int last = i;
				for(int j = i + 1; j < u; ++j){
					if(h[j] >= w){
						node[{j, w}] = co++;
						F[j].pb(w);
					}
				}
			}
		}
	}
	for(int i = 0; i < n; ++i){
		F[i].pb(0);
		F[i].pb(h[i]);
		sort(all(F[i]));
		F[i].erase(unique(all(F[i])), F[i].end());
		for(int p: F[i]){
			// cout << i << ' ' <<p << '\n';
			node[{i, p}] = co++;
		}
		for(int j = 0; j + 1 < F[i].size(); ++j){
			// cout << F[i][j] << ' ';
			g[node[{i, F[i][j]}]].pb({node[{i, F[i][j + 1]}], F[i][j + 1] - F[i][j]});
			g[node[{i, F[i][j + 1]}]].pb({node[{i, F[i][j]}], F[i][j + 1] - F[i][j]});
		}
		// cout << '\n';
	}
	// cout << "\n";
	for(int i = 0; i < n; ++i){
		for(auto U: G[i]){
			int u = U.ff; ll w = U.ss;
			if(u > i){
				int last = i;
				for(int j = i; j <= u; ++j){
					if(h[j] >= w){
						g[node[{last, w}]].pb({node[{j, w}], abs(x[j]-x[last])});
						g[node[{j, w}]].pb({node[{last, w}], abs(x[j]-x[last])});
						last = j;
					}
				}
			}
		}
	}

	vector<ll> dist(co, 1e15*1ll);
	vector<bool> vis(n);
	priority_queue<pair<ll, int>> Q;
	Q.push({0, node[{s, 0}]});
	dist[node[{s, 0}]] = 0;
	while(!Q.empty()){
		int v = Q.top().ss; Q.pop();
		if(vis[v]) continue;
		// cout  << v << ' ' << dist[v] << '\n';
		vis[v] = 1;
		for(auto U: g[v]){
			int u = U.ff;
			ll w= U.ss;
			if(dist[u] > dist[v] + w){
				dist[u] = dist[v] + w;;
				Q.push({-dist[u], u});
			}
		}
	}
	ll D = dist[node[{gg, 0}]];
	if(D == 1e15*1ll) return -1;
	// cout << node[{gg,0}] << ' ';
	return D;
}

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:32:9: warning: unused variable 'last' [-Wunused-variable]
   32 |     int last = i;
      |         ^~~~
walk.cpp:51:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |   for(int j = 0; j + 1 < F[i].size(); ++j){
      |                  ~~~~~~^~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7260 KB Output is correct
2 Correct 2 ms 7260 KB Output is correct
3 Correct 1 ms 7260 KB Output is correct
4 Correct 1 ms 7488 KB Output is correct
5 Runtime error 9 ms 14940 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 7260 KB Output is correct
2 Correct 1 ms 7260 KB Output is correct
3 Runtime error 150 ms 99428 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 24916 KB Output is correct
2 Runtime error 1641 ms 697840 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 24916 KB Output is correct
2 Runtime error 1641 ms 697840 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7260 KB Output is correct
2 Correct 2 ms 7260 KB Output is correct
3 Correct 1 ms 7260 KB Output is correct
4 Correct 1 ms 7488 KB Output is correct
5 Runtime error 9 ms 14940 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -