oj.uz

Submission #762330

# Submission time Handle Problem Language Result Execution time Memory
762330 2023-06-21T10:21:28 Z aihay Sky Walking (IOI19_walk) C++14
24 / 100
 2108 ms 537924 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
#define F first
#define S second
#define PB push_back
#define FR(i,a,b) for(int i=(a);i<(b);i++)
#define FOR(i,n) FR(i,0,n)
#define SZ(x) int(x.size())
const LL MAAX=1e18;
const int MOD=1e9+7;
const int MAX=1e9;

int n,m,s,g,x[100010],h[100010],l[100010],r[100010],y[100010],idxx;
pair<int,int> srtb[100010];
pair<int,pair<int,int>> srts[100010];
LL cst[1000010];
vector<int> v[2000010];
map<pair<int,int>,int> mp;
pair<int,int> inter[2000010];
LL dijk(){
	for(int i=0;i<idxx;i++)
		cst[i]=MAAX;
	priority_queue<pair<LL,int>> pq;
	pq.push({0,1});
	while(pq.size()){
		LL cost=-pq.top().F;
		int idx=pq.top().S;
		pq.pop();
		if(cost>cst[idx])
			continue;
		cst[idx]=cost;
		if(idx==2)
			break;
		for(int i=0;i<v[idx].size();i++){
			int x1=inter[idx].F,x2=inter[v[idx][i]].F;
			int y1=inter[idx].S,y2=inter[v[idx][i]].S;
			LL ncst=cost+abs(x2-x1)+abs(y2-y1);
			int nidx=v[idx][i];
			if(ncst<cst[nidx]){
				cst[nidx]=ncst;
				pq.push({-ncst,nidx});
			}
		}
	}
	if(cst[2]==MAAX)
		cst[2]=-1;
	return cst[2];
}
map<int,vector<int>> vec;
LL min_distance(vector<int> X,vector<int> H,vector<int> L,vector<int> R,vector<int> Y,int S,int G){
	n=X.size();
	m=L.size();
	s=S,g=G;
	for(int i=0;i<n;i++){
		x[i]=X[i];
		h[i]=H[i];
		vec[x[i]].PB(0);
		srtb[i]={-h[i],x[i]};
	}
	sort(srtb,srtb+n);
	idxx++;
	mp[{x[s],0}]=idxx++;
	inter[1]={x[s],0};
	mp[{x[g],0}]=idxx++;
	inter[2]={x[g],0};
	for(int i=0;i<n;i++){
		srtb[i].F*=-1;
		if(mp[{x[i],0}]==0){
			mp[{x[i],0}]=idxx++;
			inter[idxx-1]={x[i],0};
		}
	}
	for(int i=0;i<m;i++){
		l[i]=L[i];
		r[i]=R[i];
		y[i]=Y[i];
		if(r[i]-l[i]>300)
			srts[i]={-y[i],{x[l[i]],x[r[i]]}};
		else{
			srts[i]={1,{-1,-1}};
			int lst=-1;
			for(int j=l[i];j<=r[i];j++){
				if(h[j]<y[i])
					continue;
				int xx=mp[{x[j],y[i]}];
				if(xx==0){
					mp[{x[j],y[i]}]=xx=idxx++;
					inter[idxx-1]={x[j],y[i]};
					vec[x[j]].PB(y[i]);
				}
				if(~lst){
					v[lst].PB(xx);
					v[xx].PB(lst);
				}
				lst=xx;
			}
		}
	}
	sort(srts,srts+m);
	set<int> curst;
	int idx=0;
	for(int i=0;i<m;i++){
		if(srts[i].F==1)
			break;
		srts[i].F=-srts[i].F;
		while(idx<n&&srtb[idx].F>=srts[i].F)
			curst.insert(srtb[idx++].S);
		int lst=-1;
		for(set<int>::iterator j=curst.lower_bound(srts[i].S.F);j!=curst.end()&&(*j)<=srts[i].S.S;j++){
			int xx=0;
			if(xx==0){
				mp[{(*j),srts[i].F}]=xx=idxx++;
				inter[idxx-1]={(*j),srts[i].F};
				vec[(*j)].PB(srts[i].F);
			}
			if(~lst){
				v[lst].PB(xx);
				v[xx].PB(lst);
			}
			lst=xx;
		}
	}
	for(int i=0;i<n;i++){
		sort(vec[x[i]].begin(),vec[x[i]].end());
		for(int j=1;j<vec[x[i]].size();j++){
			v[mp[{x[i],vec[x[i]][j]}]].PB(mp[{x[i],vec[x[i]][j-1]}]);
			v[mp[{x[i],vec[x[i]][j-1]}]].PB(mp[{x[i],vec[x[i]][j]}]);
		}
	}
	return dijk();
}

Compilation message

walk.cpp: In function 'LL dijk()':
walk.cpp:35:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for(int i=0;i<v[idx].size();i++){
      |               ~^~~~~~~~~~~~~~
walk.cpp: In function 'LL min_distance(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, int, int)':
walk.cpp:126:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  126 |   for(int j=1;j<vec[x[i]].size();j++){
      |               ~^~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 47316 KB Output is correct
2 Correct 22 ms 47316 KB Output is correct
3 Correct 24 ms 47288 KB Output is correct
4 Correct 22 ms 47328 KB Output is correct
5 Correct 23 ms 47316 KB Output is correct
6 Correct 23 ms 47304 KB Output is correct
7 Correct 26 ms 47320 KB Output is correct
8 Correct 22 ms 47288 KB Output is correct
9 Correct 25 ms 47308 KB Output is correct
10 Correct 23 ms 47364 KB Output is correct
11 Correct 23 ms 47324 KB Output is correct
12 Correct 26 ms 47328 KB Output is correct
13 Correct 23 ms 47316 KB Output is correct
14 Correct 23 ms 47268 KB Output is correct
15 Correct 22 ms 47244 KB Output is correct
16 Correct 23 ms 47256 KB Output is correct
17 Correct 23 ms 47396 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 47296 KB Output is correct
2 Correct 23 ms 47316 KB Output is correct
3 Correct 1077 ms 135844 KB Output is correct
4 Correct 1523 ms 157128 KB Output is correct
5 Correct 1128 ms 148252 KB Output is correct
6 Correct 1031 ms 139408 KB Output is correct
7 Correct 1156 ms 148372 KB Output is correct
8 Correct 1382 ms 158648 KB Output is correct
9 Correct 1256 ms 140516 KB Output is correct
10 Correct 2108 ms 190952 KB Output is correct
11 Correct 661 ms 101904 KB Output is correct
12 Correct 569 ms 98956 KB Output is correct
13 Correct 1841 ms 176768 KB Output is correct
14 Correct 469 ms 101980 KB Output is correct
15 Correct 542 ms 103532 KB Output is correct
16 Correct 567 ms 101752 KB Output is correct
17 Correct 558 ms 96568 KB Output is correct
18 Correct 376 ms 98740 KB Output is correct
19 Correct 36 ms 49908 KB Output is correct
20 Correct 205 ms 74296 KB Output is correct
21 Correct 520 ms 92692 KB Output is correct
22 Correct 540 ms 98888 KB Output is correct
23 Correct 645 ms 111628 KB Output is correct
24 Correct 598 ms 101728 KB Output is correct
25 Correct 533 ms 95576 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 153 ms 58792 KB Output is correct
2 Runtime error 1517 ms 537924 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 153 ms 58792 KB Output is correct
2 Runtime error 1517 ms 537924 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 22 ms 47316 KB Output is correct
2 Correct 22 ms 47316 KB Output is correct
3 Correct 24 ms 47288 KB Output is correct
4 Correct 22 ms 47328 KB Output is correct
5 Correct 23 ms 47316 KB Output is correct
6 Correct 23 ms 47304 KB Output is correct
7 Correct 26 ms 47320 KB Output is correct
8 Correct 22 ms 47288 KB Output is correct
9 Correct 25 ms 47308 KB Output is correct
10 Correct 23 ms 47364 KB Output is correct
11 Correct 23 ms 47324 KB Output is correct
12 Correct 26 ms 47328 KB Output is correct
13 Correct 23 ms 47316 KB Output is correct
14 Correct 23 ms 47268 KB Output is correct
15 Correct 22 ms 47244 KB Output is correct
16 Correct 23 ms 47256 KB Output is correct
17 Correct 23 ms 47396 KB Output is correct
18 Correct 23 ms 47296 KB Output is correct
19 Correct 23 ms 47316 KB Output is correct
20 Correct 1077 ms 135844 KB Output is correct
21 Correct 1523 ms 157128 KB Output is correct
22 Correct 1128 ms 148252 KB Output is correct
23 Correct 1031 ms 139408 KB Output is correct
24 Correct 1156 ms 148372 KB Output is correct
25 Correct 1382 ms 158648 KB Output is correct
26 Correct 1256 ms 140516 KB Output is correct
27 Correct 2108 ms 190952 KB Output is correct
28 Correct 661 ms 101904 KB Output is correct
29 Correct 569 ms 98956 KB Output is correct
30 Correct 1841 ms 176768 KB Output is correct
31 Correct 469 ms 101980 KB Output is correct
32 Correct 542 ms 103532 KB Output is correct
33 Correct 567 ms 101752 KB Output is correct
34 Correct 558 ms 96568 KB Output is correct
35 Correct 376 ms 98740 KB Output is correct
36 Correct 36 ms 49908 KB Output is correct
37 Correct 205 ms 74296 KB Output is correct
38 Correct 520 ms 92692 KB Output is correct
39 Correct 540 ms 98888 KB Output is correct
40 Correct 645 ms 111628 KB Output is correct
41 Correct 598 ms 101728 KB Output is correct
42 Correct 533 ms 95576 KB Output is correct
43 Correct 153 ms 58792 KB Output is correct
44 Runtime error 1517 ms 537924 KB Execution killed with signal 11
45 Halted 0 ms 0 KB -