oj.uz

Submission #762348

# Submission time Handle Problem Language Result Execution time Memory
762348 2023-06-21T10:31:25 Z aihay Sky Walking (IOI19_walk) C++14
24 / 100
 2093 ms 538128 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,tim;
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){
	tim=clock();
	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]>150)
			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||clock()-tim>1000000)
			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:127:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  127 |   for(int j=1;j<vec[x[i]].size();j++){
      |               ~^~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 47184 KB Output is correct
2 Correct 26 ms 47288 KB Output is correct
3 Correct 26 ms 47264 KB Output is correct
4 Correct 27 ms 47280 KB Output is correct
5 Correct 26 ms 47392 KB Output is correct
6 Correct 26 ms 47368 KB Output is correct
7 Correct 28 ms 47400 KB Output is correct
8 Correct 28 ms 47324 KB Output is correct
9 Correct 25 ms 47308 KB Output is correct
10 Correct 25 ms 47324 KB Output is correct
11 Correct 25 ms 47308 KB Output is correct
12 Correct 25 ms 47316 KB Output is correct
13 Correct 25 ms 47344 KB Output is correct
14 Correct 25 ms 47336 KB Output is correct
15 Correct 25 ms 47280 KB Output is correct
16 Correct 25 ms 47316 KB Output is correct
17 Correct 30 ms 47352 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 47312 KB Output is correct
2 Correct 25 ms 47216 KB Output is correct
3 Correct 1124 ms 136084 KB Output is correct
4 Correct 1560 ms 157576 KB Output is correct
5 Correct 1154 ms 148440 KB Output is correct
6 Correct 1066 ms 139796 KB Output is correct
7 Correct 1179 ms 148668 KB Output is correct
8 Correct 1389 ms 158784 KB Output is correct
9 Correct 1265 ms 140812 KB Output is correct
10 Correct 2093 ms 191408 KB Output is correct
11 Correct 722 ms 102200 KB Output is correct
12 Correct 575 ms 99184 KB Output is correct
13 Correct 1852 ms 177108 KB Output is correct
14 Correct 498 ms 102232 KB Output is correct
15 Correct 545 ms 103792 KB Output is correct
16 Correct 595 ms 102144 KB Output is correct
17 Correct 611 ms 96844 KB Output is correct
18 Correct 420 ms 98996 KB Output is correct
19 Correct 40 ms 50108 KB Output is correct
20 Correct 225 ms 74560 KB Output is correct
21 Correct 541 ms 92968 KB Output is correct
22 Correct 537 ms 99272 KB Output is correct
23 Correct 666 ms 111644 KB Output is correct
24 Correct 602 ms 102208 KB Output is correct
25 Correct 538 ms 95948 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 59056 KB Output is correct
2 Runtime error 1542 ms 538128 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 138 ms 59056 KB Output is correct
2 Runtime error 1542 ms 538128 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 25 ms 47184 KB Output is correct
2 Correct 26 ms 47288 KB Output is correct
3 Correct 26 ms 47264 KB Output is correct
4 Correct 27 ms 47280 KB Output is correct
5 Correct 26 ms 47392 KB Output is correct
6 Correct 26 ms 47368 KB Output is correct
7 Correct 28 ms 47400 KB Output is correct
8 Correct 28 ms 47324 KB Output is correct
9 Correct 25 ms 47308 KB Output is correct
10 Correct 25 ms 47324 KB Output is correct
11 Correct 25 ms 47308 KB Output is correct
12 Correct 25 ms 47316 KB Output is correct
13 Correct 25 ms 47344 KB Output is correct
14 Correct 25 ms 47336 KB Output is correct
15 Correct 25 ms 47280 KB Output is correct
16 Correct 25 ms 47316 KB Output is correct
17 Correct 30 ms 47352 KB Output is correct
18 Correct 26 ms 47312 KB Output is correct
19 Correct 25 ms 47216 KB Output is correct
20 Correct 1124 ms 136084 KB Output is correct
21 Correct 1560 ms 157576 KB Output is correct
22 Correct 1154 ms 148440 KB Output is correct
23 Correct 1066 ms 139796 KB Output is correct
24 Correct 1179 ms 148668 KB Output is correct
25 Correct 1389 ms 158784 KB Output is correct
26 Correct 1265 ms 140812 KB Output is correct
27 Correct 2093 ms 191408 KB Output is correct
28 Correct 722 ms 102200 KB Output is correct
29 Correct 575 ms 99184 KB Output is correct
30 Correct 1852 ms 177108 KB Output is correct
31 Correct 498 ms 102232 KB Output is correct
32 Correct 545 ms 103792 KB Output is correct
33 Correct 595 ms 102144 KB Output is correct
34 Correct 611 ms 96844 KB Output is correct
35 Correct 420 ms 98996 KB Output is correct
36 Correct 40 ms 50108 KB Output is correct
37 Correct 225 ms 74560 KB Output is correct
38 Correct 541 ms 92968 KB Output is correct
39 Correct 537 ms 99272 KB Output is correct
40 Correct 666 ms 111644 KB Output is correct
41 Correct 602 ms 102208 KB Output is correct
42 Correct 538 ms 95948 KB Output is correct
43 Correct 138 ms 59056 KB Output is correct
44 Runtime error 1542 ms 538128 KB Execution killed with signal 11
45 Halted 0 ms 0 KB -