oj.uz

Submission #603047

# Submission time Handle Problem Language Result Execution time Memory
603047 2022-07-23T14:34:52 Z Koosha_mv Sky Walking (IOI19_walk) C++14
10 / 100
 4000 ms 661340 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;
		//if(vis[u]) assert(0);
		vis[u]=1;
		s.erase(*s.begin());
		for(auto [v,w] : g[u]){
			if(dist[u]+w<dist[v]){
				if(w<0) assert(0);
				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:94:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   94 |   for(auto [v,w] : g[u]){
      |            ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 94240 KB Output is correct
2 Correct 44 ms 94192 KB Output is correct
3 Correct 45 ms 94180 KB Output is correct
4 Correct 52 ms 94140 KB Output is correct
5 Correct 55 ms 94284 KB Output is correct
6 Correct 46 ms 94340 KB Output is correct
7 Correct 46 ms 94272 KB Output is correct
8 Correct 50 ms 94284 KB Output is correct
9 Correct 52 ms 94152 KB Output is correct
10 Correct 50 ms 94340 KB Output is correct
11 Correct 49 ms 94224 KB Output is correct
12 Correct 45 ms 94252 KB Output is correct
13 Correct 44 ms 94216 KB Output is correct
14 Correct 44 ms 94156 KB Output is correct
15 Correct 44 ms 94156 KB Output is correct
16 Correct 44 ms 94172 KB Output is correct
17 Correct 50 ms 94364 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 94244 KB Output is correct
2 Correct 46 ms 94152 KB Output is correct
3 Correct 2530 ms 242892 KB Output is correct
4 Execution timed out 4075 ms 245060 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 217 ms 108728 KB Output is correct
2 Runtime error 2261 ms 661340 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 217 ms 108728 KB Output is correct
2 Runtime error 2261 ms 661340 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 46 ms 94240 KB Output is correct
2 Correct 44 ms 94192 KB Output is correct
3 Correct 45 ms 94180 KB Output is correct
4 Correct 52 ms 94140 KB Output is correct
5 Correct 55 ms 94284 KB Output is correct
6 Correct 46 ms 94340 KB Output is correct
7 Correct 46 ms 94272 KB Output is correct
8 Correct 50 ms 94284 KB Output is correct
9 Correct 52 ms 94152 KB Output is correct
10 Correct 50 ms 94340 KB Output is correct
11 Correct 49 ms 94224 KB Output is correct
12 Correct 45 ms 94252 KB Output is correct
13 Correct 44 ms 94216 KB Output is correct
14 Correct 44 ms 94156 KB Output is correct
15 Correct 44 ms 94156 KB Output is correct
16 Correct 44 ms 94172 KB Output is correct
17 Correct 50 ms 94364 KB Output is correct
18 Correct 49 ms 94244 KB Output is correct
19 Correct 46 ms 94152 KB Output is correct
20 Correct 2530 ms 242892 KB Output is correct
21 Execution timed out 4075 ms 245060 KB Time limit exceeded
22 Halted 0 ms 0 KB -