oj.uz

Submission #603031

# Submission time Handle Problem Language Result Execution time Memory
603031 2022-07-23T14:27:10 Z Koosha_mv Sky Walking (IOI19_walk) C++14
10 / 100
 4000 ms 603688 KB 
#include "walk.h"
#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,int(v.size())) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<x.F<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first

const int N=2e6+99;
const ll inf=1e16;

int n,m,cnt,seg[N],vis[N];
ll dist[N];
vector<int> a,h,vec;
vector<int> V[N];
vector<pair<int,int>> g[N];
map<pair<int,int>,int> mark;

int get(int x,int y){
	if(mark.count(mp(x,y))) return mark[mp(x,y)];
	int p=lower_bound(all(a),x)-a.begin();
	V[p].pb(y);
	return mark[mp(x,y)]=++cnt;
}
void build(int id=1,int l=0,int r=n){
	if(l+1==r){
		seg[id]=h[l];
		return ;
	}
	int mid=(l+r)>>1;
	build(id<<1,l,mid);
	build(id<<1|1,mid,r);
	seg[id]=max(seg[id<<1],seg[id<<1|1]);
}
void get(int L,int R,int val,int id=1,int l=0,int r=n){
	if(r<=L || R<=l || seg[id]<val) return ;
	if(l+1==r){
		vec.pb(l);
		return ;
	}
	int mid=(l+r)>>1;
	get(L,R,val,id<<1,l,mid);
	get(L,R,val,id<<1|1,mid,r);
}

ll min_distance(vector<int> _a,vector<int> _h,vector<int> l,vector<int> r,vector<int> y,int S,int T) {
	a=_a,h=_h;
	n=a.size(),m=l.size();
	build();
	get(a[S],0);
	get(a[T],0);
	f(i,0,m){
		vec.clear();
		get(l[i],r[i]+1,y[i]);
		f(j,1,vec.size()){
			int u=get(a[vec[j-1]],y[i]),v=get(a[vec[j]],y[i]);
			g[u].pb({v,a[vec[j]]-a[vec[j-1]]});
			g[v].pb({u,a[vec[j]]-a[vec[j-1]]});
		}
		//dbgv(vec);
	}
	f(i,0,n){
		sort(all(V[i]));
		f(j,1,V[i].size()){
			int u=get(a[i],V[i][j-1]),v=get(a[i],V[i][j]);
			g[u].pb({v,V[i][j]-V[i][j-1]});
			g[v].pb({u,V[i][j]-V[i][j-1]});
		}
	}
	set<pair<int,int>> s;
	f(i,1,cnt+1) dist[i]=inf;
	dist[get(a[S],0)]=0;
	f(i,1,cnt+1) s.insert({dist[i],i});
	while(s.size()){
		int u=(*s.begin()).S;
		s.erase(*s.begin());
		for(auto [v,w] : g[u]){
			if(dist[u]+w<dist[v]){
				s.erase({dist[v],v});
				dist[v]=dist[u]+w;
				s.insert({dist[v],v});
			}
		}
	}
	if(dist[get(a[T],0)]<inf){
		return dist[get(a[T],0)];
	}
	else{
		return -1;
	}
}
/*
5 3
0 6
4 6
5 6
6 6
9 6
3 4 1
1 3 3
0 2 6
0 4

0, 4, 5, 6, 9],
[6, 6, 6, 6, 6],
[3, 1, 0],
[4, 3, 2],
[1, 3, 6],
0, 4)
*/

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:9:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define f(i,a,b) for(int i=a;i<b;i++)
......
   70 |   f(j,1,vec.size()){
      |     ~~~~~~~~~~~~~~             
walk.cpp:70:3: note: in expansion of macro 'f'
   70 |   f(j,1,vec.size()){
      |   ^
walk.cpp:9:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define f(i,a,b) for(int i=a;i<b;i++)
......
   79 |   f(j,1,V[i].size()){
      |     ~~~~~~~~~~~~~~~            
walk.cpp:79:3: note: in expansion of macro 'f'
   79 |   f(j,1,V[i].size()){
      |   ^
walk.cpp:92:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   92 |   for(auto [v,w] : g[u]){
      |            ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 94156 KB Output is correct
2 Correct 46 ms 94156 KB Output is correct
3 Correct 46 ms 94156 KB Output is correct
4 Correct 51 ms 94132 KB Output is correct
5 Correct 48 ms 94248 KB Output is correct
6 Correct 47 ms 94284 KB Output is correct
7 Correct 57 ms 94336 KB Output is correct
8 Correct 51 ms 94300 KB Output is correct
9 Correct 48 ms 94152 KB Output is correct
10 Correct 49 ms 94356 KB Output is correct
11 Correct 46 ms 94244 KB Output is correct
12 Correct 46 ms 94248 KB Output is correct
13 Correct 46 ms 94164 KB Output is correct
14 Correct 47 ms 94248 KB Output is correct
15 Correct 51 ms 94220 KB Output is correct
16 Correct 49 ms 94240 KB Output is correct
17 Correct 50 ms 94352 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 94244 KB Output is correct
2 Correct 44 ms 94140 KB Output is correct
3 Correct 2422 ms 234128 KB Output is correct
4 Execution timed out 4070 ms 234048 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 228 ms 107276 KB Output is correct
2 Runtime error 2218 ms 603688 KB Execution killed with signal 6
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 228 ms 107276 KB Output is correct
2 Runtime error 2218 ms 603688 KB Execution killed with signal 6
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 94156 KB Output is correct
2 Correct 46 ms 94156 KB Output is correct
3 Correct 46 ms 94156 KB Output is correct
4 Correct 51 ms 94132 KB Output is correct
5 Correct 48 ms 94248 KB Output is correct
6 Correct 47 ms 94284 KB Output is correct
7 Correct 57 ms 94336 KB Output is correct
8 Correct 51 ms 94300 KB Output is correct
9 Correct 48 ms 94152 KB Output is correct
10 Correct 49 ms 94356 KB Output is correct
11 Correct 46 ms 94244 KB Output is correct
12 Correct 46 ms 94248 KB Output is correct
13 Correct 46 ms 94164 KB Output is correct
14 Correct 47 ms 94248 KB Output is correct
15 Correct 51 ms 94220 KB Output is correct
16 Correct 49 ms 94240 KB Output is correct
17 Correct 50 ms 94352 KB Output is correct
18 Correct 46 ms 94244 KB Output is correct
19 Correct 44 ms 94140 KB Output is correct
20 Correct 2422 ms 234128 KB Output is correct
21 Execution timed out 4070 ms 234048 KB Time limit exceeded
22 Halted 0 ms 0 KB -