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Submission #230522

# Submission time Handle Problem Language Result Execution time Memory
230522 2020-05-10T09:56:26 Z AlexLuchianov Jakarta Skyscrapers (APIO15_skyscraper) C++14
0 / 100
 6 ms 2432 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <unordered_map>
#include <queue>
#include <map>

using namespace std;

using ll = long long;
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) < (b)) ? (b) : (a))

int const nmax = 30000;
int v[1 + nmax][2];
vector<int> g[1 + nmax];

map<int, int> dp[1 + nmax];

int seen[1 + nmax];

queue<pair<int,int>> q;

void processlevel(int node, int cost){
  if(seen[node] == 1)
    return ;
  seen[node] = 1;
  for(int h = 0; h < g[node].size(); h++){
    int jump2 = g[node][h];
    if(dp[node][jump2] == 0){
      dp[node][jump2] = cost;
      q.push({node, jump2});
    }
  }
}

int main()
{
  ios::sync_with_stdio(0);
  cin.tie(0);

  int n, m;
  cin >> n >> m;
  for(int i = 0;i < m; i++) {
    cin >> v[i][0] >> v[i][1];
    g[v[i][0]].push_back(v[i][1]);
  }
  processlevel(v[0][0], 1);

  while(0 < q.size()){
    int node = q.front().first;
    int jump = q.front().second;
    int cost = dp[node][jump];
    if(node == v[1][0]){
      cout << cost;
      return 0;
    }
    q.pop();

    if(0 <= node - jump)
      if(dp[node - jump][jump] == 0) {
        dp[node - jump][jump] = cost + 1;
        processlevel(node - jump, cost + 1);
        q.push({node - jump, jump});
      }
    if(node + jump < n)
      if(dp[node + jump][jump] == 0) {
        dp[node + jump][jump] = cost + 1;
        processlevel(node + jump, cost + 1);
        q.push({node + jump, jump});
      }
  }

  cout << dp[v[1][0]][v[1][1]] - 1;
  return 0;
}

Compilation message

skyscraper.cpp: In function 'void processlevel(int, int)':
skyscraper.cpp:28:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int h = 0; h < g[node].size(); h++){
                  ~~^~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 2432 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 2432 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 2432 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 2432 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 2432 KB Output isn't correct
2 Halted 0 ms 0 KB -