oj.uz

Submission #287571

# Submission time Handle Problem Language Result Execution time Memory
287571 2020-08-31T20:12:53 Z DanerZein Sky Walking (IOI19_walk) C++14
10 / 100
 4000 ms 319436 KB 
#include <bits/stdc++.h>
#include "walk.h"
#define msize 1046875
#define MAX 9223372036854775806
using namespace std;
typedef long long ll;
typedef pair<ll,ll> ii;
typedef vector<ii> vi;
ll dist[msize];
ll isq[msize];
vector<vi> G;
void dijktra(ll u){
  memset(isq,0,sizeof isq);
  for(int i=0;i<=msize;i++){
    dist[i]=MAX;
  }
  priority_queue<ii,vi,greater<ii> > pq;
  dist[u]=0;
  isq[u]=1;
  pq.push(ii(0,u));
  while(!pq.empty()){
    ll x=pq.top().second;
    ll di=pq.top().first;
    pq.pop();
    isq[x]=0;
    // if(di>dist[x]) continue;
    for(auto &v:G[x]){
      ll w=v.first;
      if(dist[v.second]>dist[x]+w){
	dist[v.second]=dist[x]+w;
	if(isq[v.second]==0){
	  pq.push(ii(dist[v.second],v.second));
	  isq[v.second]=1;
	}
      }
    }
  }
}
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) {
  ll no;
  no=0;
  map<ii,ll> m;
  G.resize(msize);
  vi aux;
  for(int i=0;i<y.size();i++){
    ll ant=-1,id;
    for(int j=l[i];j<=r[i];j++){
      if(h[j]>=y[i]){
	if(m[ii(x[j],y[i])]==0){
	  no++;
	  m[ii(x[j],y[i])]=no;
	}
	aux.push_back(ii(x[j],y[i]));
	if(ant==-1){
	  ant=m[ii(x[j],y[i])];
	  id=j;
	}
	else{
	  ll dis=abs(x[j]-x[id]);
	  ll u=m[ii(x[j],y[i])];
	  G[ant].push_back(ii(dis,u));
	  G[u].push_back(ii(dis,ant));
	  ant=u;
	  id=j;
      }
      }
    }
  }
  if(m[ii(x[s],0)]==0){
    no++;
    m[ii(x[s],0)]=no;
    aux.push_back(ii(x[s],0));
  }
  if(m[ii(x[g],0)]==0){
    no++;
    m[ii(x[g],0)]=no;
    aux.push_back(ii(x[g],0));                       
  }
  sort(aux.begin(),aux.end());
  for(int i=1;i<aux.size();i++){
    if(aux[i].first==aux[i-1].first){
      int u=m[ii(aux[i].first,aux[i].second)];
      int v=m[ii(aux[i-1].first,aux[i-1].second)];
      int w=abs(aux[i].second-aux[i-1].second);
      G[u].push_back(ii(w,v));
      G[v].push_back(ii(w,u));
    }
  }
  dijktra(m[ii(x[s],0)]);
   if(dist[m[ii(x[g],0)]]==MAX) dist[m[ii(x[g],0)]]=-1;
  ll res=dist[m[ii(x[g],0)]];
  return res;
}

Compilation message

walk.cpp: In function 'void dijktra(ll)':
walk.cpp:23:8: warning: unused variable 'di' [-Wunused-variable]
   23 |     ll di=pq.top().first;
      |        ^~
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:45:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |   for(int i=0;i<y.size();i++){
      |               ~^~~~~~~~~
walk.cpp:80:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |   for(int i=1;i<aux.size();i++){
      |               ~^~~~~~~~~~~
walk.cpp: In function 'void dijktra(ll)':
walk.cpp:15:12: warning: iteration 1046875 invokes undefined behavior [-Waggressive-loop-optimizations]
   15 |     dist[i]=MAX;
      |            ^
walk.cpp:14:16: note: within this loop
   14 |   for(int i=0;i<=msize;i++){
      |                ^
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:59:24: warning: 'id' may be used uninitialized in this function [-Wmaybe-uninitialized]
   59 |    ll dis=abs(x[j]-x[id]);
      |                        ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 41336 KB Output is correct
2 Correct 26 ms 41344 KB Output is correct
3 Correct 27 ms 41316 KB Output is correct
4 Correct 26 ms 41344 KB Output is correct
5 Correct 27 ms 41424 KB Output is correct
6 Correct 27 ms 41344 KB Output is correct
7 Correct 27 ms 41344 KB Output is correct
8 Correct 27 ms 41464 KB Output is correct
9 Correct 26 ms 41344 KB Output is correct
10 Correct 27 ms 41472 KB Output is correct
11 Correct 26 ms 41344 KB Output is correct
12 Correct 26 ms 41344 KB Output is correct
13 Correct 26 ms 41344 KB Output is correct
14 Correct 26 ms 41344 KB Output is correct
15 Correct 27 ms 41344 KB Output is correct
16 Correct 27 ms 41344 KB Output is correct
17 Correct 27 ms 41472 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 41336 KB Output is correct
2 Correct 27 ms 41336 KB Output is correct
3 Correct 1547 ms 182680 KB Output is correct
4 Correct 1336 ms 179440 KB Output is correct
5 Correct 1006 ms 160016 KB Output is correct
6 Correct 1652 ms 142948 KB Output is correct
7 Correct 1020 ms 160068 KB Output is correct
8 Correct 2060 ms 223688 KB Output is correct
9 Correct 1106 ms 159424 KB Output is correct
10 Correct 1890 ms 242156 KB Output is correct
11 Correct 788 ms 108756 KB Output is correct
12 Correct 424 ms 71776 KB Output is correct
13 Correct 1622 ms 214320 KB Output is correct
14 Correct 3789 ms 71252 KB Output is correct
15 Correct 2175 ms 71908 KB Output is correct
16 Correct 552 ms 74964 KB Output is correct
17 Correct 527 ms 73824 KB Output is correct
18 Execution timed out 4049 ms 35212 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 190 ms 57320 KB Output is correct
2 Runtime error 1162 ms 319436 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 190 ms 57320 KB Output is correct
2 Runtime error 1162 ms 319436 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 26 ms 41336 KB Output is correct
2 Correct 26 ms 41344 KB Output is correct
3 Correct 27 ms 41316 KB Output is correct
4 Correct 26 ms 41344 KB Output is correct
5 Correct 27 ms 41424 KB Output is correct
6 Correct 27 ms 41344 KB Output is correct
7 Correct 27 ms 41344 KB Output is correct
8 Correct 27 ms 41464 KB Output is correct
9 Correct 26 ms 41344 KB Output is correct
10 Correct 27 ms 41472 KB Output is correct
11 Correct 26 ms 41344 KB Output is correct
12 Correct 26 ms 41344 KB Output is correct
13 Correct 26 ms 41344 KB Output is correct
14 Correct 26 ms 41344 KB Output is correct
15 Correct 27 ms 41344 KB Output is correct
16 Correct 27 ms 41344 KB Output is correct
17 Correct 27 ms 41472 KB Output is correct
18 Correct 26 ms 41336 KB Output is correct
19 Correct 27 ms 41336 KB Output is correct
20 Correct 1547 ms 182680 KB Output is correct
21 Correct 1336 ms 179440 KB Output is correct
22 Correct 1006 ms 160016 KB Output is correct
23 Correct 1652 ms 142948 KB Output is correct
24 Correct 1020 ms 160068 KB Output is correct
25 Correct 2060 ms 223688 KB Output is correct
26 Correct 1106 ms 159424 KB Output is correct
27 Correct 1890 ms 242156 KB Output is correct
28 Correct 788 ms 108756 KB Output is correct
29 Correct 424 ms 71776 KB Output is correct
30 Correct 1622 ms 214320 KB Output is correct
31 Correct 3789 ms 71252 KB Output is correct
32 Correct 2175 ms 71908 KB Output is correct
33 Correct 552 ms 74964 KB Output is correct
34 Correct 527 ms 73824 KB Output is correct
35 Execution timed out 4049 ms 35212 KB Time limit exceeded
36 Halted 0 ms 0 KB -