oj.uz

Submission #603035

# Submission time Handle Problem Language Result Execution time Memory
603035 2022-07-23T14:29:16 Z Koosha_mv Sky Walking (IOI19_walk) C++14
10 / 100
 4000 ms 603508 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()){
		cnt--;
		int u=(*s.begin()).S;
		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(cnt<0) assert(0);
	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:93:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   93 |   for(auto [v,w] : g[u]){
      |            ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 94208 KB Output is correct
2 Correct 50 ms 94168 KB Output is correct
3 Correct 56 ms 94232 KB Output is correct
4 Correct 50 ms 94176 KB Output is correct
5 Correct 54 ms 94368 KB Output is correct
6 Correct 58 ms 94284 KB Output is correct
7 Correct 51 ms 94236 KB Output is correct
8 Correct 54 ms 94272 KB Output is correct
9 Correct 53 ms 94272 KB Output is correct
10 Correct 49 ms 94392 KB Output is correct
11 Correct 55 ms 94248 KB Output is correct
12 Correct 51 ms 94248 KB Output is correct
13 Correct 46 ms 94140 KB Output is correct
14 Correct 51 ms 94172 KB Output is correct
15 Correct 56 ms 94220 KB Output is correct
16 Correct 57 ms 94156 KB Output is correct
17 Correct 48 ms 94284 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 94116 KB Output is correct
2 Correct 46 ms 94256 KB Output is correct
3 Correct 2498 ms 233292 KB Output is correct
4 Execution timed out 4053 ms 233168 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 206 ms 107208 KB Output is correct
2 Runtime error 2252 ms 603508 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 206 ms 107208 KB Output is correct
2 Runtime error 2252 ms 603508 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 47 ms 94208 KB Output is correct
2 Correct 50 ms 94168 KB Output is correct
3 Correct 56 ms 94232 KB Output is correct
4 Correct 50 ms 94176 KB Output is correct
5 Correct 54 ms 94368 KB Output is correct
6 Correct 58 ms 94284 KB Output is correct
7 Correct 51 ms 94236 KB Output is correct
8 Correct 54 ms 94272 KB Output is correct
9 Correct 53 ms 94272 KB Output is correct
10 Correct 49 ms 94392 KB Output is correct
11 Correct 55 ms 94248 KB Output is correct
12 Correct 51 ms 94248 KB Output is correct
13 Correct 46 ms 94140 KB Output is correct
14 Correct 51 ms 94172 KB Output is correct
15 Correct 56 ms 94220 KB Output is correct
16 Correct 57 ms 94156 KB Output is correct
17 Correct 48 ms 94284 KB Output is correct
18 Correct 45 ms 94116 KB Output is correct
19 Correct 46 ms 94256 KB Output is correct
20 Correct 2498 ms 233292 KB Output is correct
21 Execution timed out 4053 ms 233168 KB Time limit exceeded
22 Halted 0 ms 0 KB -