oj.uz

Submission #603055

# Submission time Handle Problem Language Result Execution time Memory
603055 2022-07-23T14:37:04 Z Koosha_mv Sky Walking (IOI19_walk) C++14
0 / 100
 2402 ms 661292 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<ll,ll>> 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());
		if(vis[u]) continue ;
		//if(vis[u]) assert(0);
		vis[u]=1;
		for(auto [v,w] : g[u]){
			if(dist[u]+w<dist[v]){
				//s.erase({dist[v],v});
				dist[v]=dist[u]+w;
				//if(vis[v]) assert(0);
				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:95:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   95 |   for(auto [v,w] : g[u]){
      |            ^

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 94252 KB Output is correct
2 Correct 50 ms 94248 KB Output is correct
3 Correct 45 ms 94152 KB Output is correct
4 Correct 53 ms 94252 KB Output is correct
5 Correct 61 ms 94300 KB Output is correct
6 Correct 47 ms 94284 KB Output is correct
7 Correct 58 ms 94336 KB Output is correct
8 Correct 48 ms 94332 KB Output is correct
9 Correct 56 ms 94284 KB Output is correct
10 Correct 48 ms 94324 KB Output is correct
11 Correct 56 ms 94184 KB Output is correct
12 Correct 51 ms 94180 KB Output is correct
13 Correct 53 ms 94228 KB Output is correct
14 Correct 47 ms 94224 KB Output is correct
15 Correct 46 ms 94184 KB Output is correct
16 Incorrect 52 ms 94268 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 94224 KB Output is correct
2 Correct 56 ms 94240 KB Output is correct
3 Correct 2196 ms 243184 KB Output is correct
4 Incorrect 1699 ms 245276 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 239 ms 108672 KB Output is correct
2 Runtime error 2402 ms 661292 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 239 ms 108672 KB Output is correct
2 Runtime error 2402 ms 661292 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 55 ms 94252 KB Output is correct
2 Correct 50 ms 94248 KB Output is correct
3 Correct 45 ms 94152 KB Output is correct
4 Correct 53 ms 94252 KB Output is correct
5 Correct 61 ms 94300 KB Output is correct
6 Correct 47 ms 94284 KB Output is correct
7 Correct 58 ms 94336 KB Output is correct
8 Correct 48 ms 94332 KB Output is correct
9 Correct 56 ms 94284 KB Output is correct
10 Correct 48 ms 94324 KB Output is correct
11 Correct 56 ms 94184 KB Output is correct
12 Correct 51 ms 94180 KB Output is correct
13 Correct 53 ms 94228 KB Output is correct
14 Correct 47 ms 94224 KB Output is correct
15 Correct 46 ms 94184 KB Output is correct
16 Incorrect 52 ms 94268 KB Output isn't correct
17 Halted 0 ms 0 KB -