oj.uz

답안 #525059

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
525059 2022-02-10T15:23:13 Z mosiashvililuka Olympic Bus (JOI20_ho_t4) C++14
100 / 100
 978 ms 9272 KB 
#include<bits/stdc++.h>
using namespace std;
const int N=1500000009;
int a,b,c,d,e,i,j,ii,jj,zx,xc,C,D,A[50009],B[50009],dis[209][209],bo[50009],dis2[209][209],pas,z[209],zi,BO[50009],DIS[209][209],Adis[209][209];
pair <pair <int, int>, pair <int, int> > p[50009];
pair <int, int> P;
multiset <pair <pair <int, int>, int> > v[209],V[209];
multiset <pair <pair <int, int>, int> >::iterator it;
priority_queue <pair <int, int> > s;
void DJI(int q){
	int h,qw,we,er;
	for(h=1; h<=a; h++){
		dis[q][h]=N;bo[h]=0;
	}
	while(s.size()) s.pop();
	s.push({0,q});dis[q][q]=0;
	while(s.size()){
		while(s.size()){
			P=s.top();
			if(bo[P.second]==0) break;
			s.pop();
		}
		if(s.size()==0) break;
		qw=-P.first;we=P.second;bo[we]=1;
		s.pop();
		for(it=v[we].begin(); it!=v[we].end(); it++){
			if(dis[q][(*it).first.first]>dis[q][we]+(*it).first.second){
				dis[q][(*it).first.first]=dis[q][we]+(*it).first.second;
				dis2[q][(*it).first.first]=(*it).second;
				s.push({-dis[q][(*it).first.first],(*it).first.first});
			}
		}
	}
}
void ADJI(int q){
	int h,qw,we,er;
	for(h=1; h<=a; h++){
		Adis[q][h]=N;bo[h]=0;
	}
	while(s.size()) s.pop();
	s.push({0,q});Adis[q][q]=0;
	while(s.size()){
		while(s.size()){
			P=s.top();
			if(bo[P.second]==0) break;
			s.pop();
		}
		if(s.size()==0) break;
		qw=-P.first;we=P.second;bo[we]=1;
		s.pop();
		for(it=V[we].begin(); it!=V[we].end(); it++){
			if(Adis[q][(*it).first.first]>Adis[q][we]+(*it).first.second){
				Adis[q][(*it).first.first]=Adis[q][we]+(*it).first.second;
				s.push({-Adis[q][(*it).first.first],(*it).first.first});
			}
		}
	}
}
//
void DJI2(int q){
	int h,qw,we,er;
	for(h=1; h<=a; h++){
		DIS[q][h]=N;bo[h]=0;
	}
	while(s.size()) s.pop();
	s.push({0,q});DIS[q][q]=0;
	while(s.size()){
		while(s.size()){
			P=s.top();
			if(bo[P.second]==0) break;
			s.pop();
		}
		if(s.size()==0) break;
		qw=-P.first;we=P.second;bo[we]=1;
		s.pop();
		for(it=v[we].begin(); it!=v[we].end(); it++){
			if(DIS[q][(*it).first.first]>DIS[q][we]+(*it).first.second){
				DIS[q][(*it).first.first]=DIS[q][we]+(*it).first.second;
				s.push({-DIS[q][(*it).first.first],(*it).first.first});
			}
		}
	}
}
//
int main(){
	ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
	cin>>a>>b;
	for(i=1; i<=b; i++){
		cin>>c>>d>>C>>D;
		p[i]={{c,d},{C,D}};
		v[c].insert({{d,C},i});
		V[d].insert({{c,C},i});
	}
	DJI(1);
	DJI(a);
	ADJI(1);
	ADJI(a);
	if(dis[1][a]!=N&&dis[a][1]!=N) pas=dis[1][a]+dis[a][1]; else pas=N;
	if(1==0){
		cout<<dis[1][a]<<" "<<dis[a][1]<<endl;
		cout<<dis2[1][a]<<" "<<dis2[a][1]<<endl;
		cout<<pas<<endl;
		return 0;
	}
	for(i=1; i<=b; i++){
		BO[i]=0;
	}
	c=a;zi=0;
	while(c!=1&&c!=0){
		zi++;z[zi]=dis2[1][c];
		e=dis2[1][c];
		if(p[e].first.first!=c){
			c=p[e].first.first;
		}else{
			c=p[e].first.second;
		}
	}
	for(i=1; i<=zi; i++) BO[z[i]]=1;
	A[0]=dis[1][a];
	for(i=1; i<=b; i++){
		if(BO[i]==1) continue;
		if(dis[1][p[i].first.second]!=N&&Adis[a][p[i].first.first]!=N) A[i]=dis[1][p[i].first.second]+p[i].second.first+Adis[a][p[i].first.first]; else A[i]=N;
		A[i]=min(A[i],dis[1][a]);
	}
	for(i=1; i<=b; i++){
		if(BO[i]==0) continue;
		it=v[p[i].first.first].lower_bound({{p[i].first.second,p[i].second.first},i});
		v[p[i].first.first].erase(it);
		v[p[i].first.second].insert({{p[i].first.first,p[i].second.first},i});
		DJI2(1);
		A[i]=DIS[1][a];
		it=v[p[i].first.second].lower_bound({{p[i].first.first,p[i].second.first},i});
		v[p[i].first.second].erase(it);
		v[p[i].first.first].insert({{p[i].first.second,p[i].second.first},i});
	}
	//
	/*for(i=0; i<=b; i++){
		cout<<A[i]<<"\n";
	}*/
	//
	
	
	for(i=1; i<=b; i++){
		BO[i]=0;
	}
	c=1;zi=0;
	while(c!=a&&c!=0){
		zi++;z[zi]=dis2[a][c];
		e=dis2[a][c];
		if(p[e].first.first!=c){
			c=p[e].first.first;
		}else{
			c=p[e].first.second;
		}
	}
	for(i=1; i<=zi; i++) BO[z[i]]=1;
	B[0]=dis[a][1];
	for(i=1; i<=b; i++){
		if(BO[i]==1) continue;
		if(dis[a][p[i].first.second]!=N&&Adis[1][p[i].first.first]!=N) B[i]=dis[a][p[i].first.second]+p[i].second.first+Adis[1][p[i].first.first]; else B[i]=N;
		B[i]=min(B[i],dis[a][1]);
	}
	for(i=1; i<=b; i++){
		if(BO[i]==0) continue;
		it=v[p[i].first.first].lower_bound({{p[i].first.second,p[i].second.first},i});
		v[p[i].first.first].erase(it);
		v[p[i].first.second].insert({{p[i].first.first,p[i].second.first},i});
		DJI2(a);
		B[i]=DIS[a][1];
		it=v[p[i].first.second].lower_bound({{p[i].first.first,p[i].second.first},i});
		v[p[i].first.second].erase(it);
		v[p[i].first.first].insert({{p[i].first.second,p[i].second.first},i});
	}
	//
	/*for(i=0; i<=b; i++){
		cout<<B[i]<<"\n";
	}*/
	//
	for(i=0; i<=b; i++){
		//pas=min(pas,A[i]+B[i]+p[i].second.second);
		if(A[i]!=N&&B[i]!=N){
			pas=min(pas,A[i]+B[i]+p[i].second.second);
		}
	}
	if(pas!=N) cout<<pas; else cout<<-1;
	return 0;
}

Compilation message

ho_t4.cpp: In function 'void DJI(int)':
ho_t4.cpp:11:8: warning: variable 'qw' set but not used [-Wunused-but-set-variable]
   11 |  int h,qw,we,er;
      |        ^~
ho_t4.cpp:11:14: warning: unused variable 'er' [-Wunused-variable]
   11 |  int h,qw,we,er;
      |              ^~
ho_t4.cpp: In function 'void ADJI(int)':
ho_t4.cpp:36:8: warning: variable 'qw' set but not used [-Wunused-but-set-variable]
   36 |  int h,qw,we,er;
      |        ^~
ho_t4.cpp:36:14: warning: unused variable 'er' [-Wunused-variable]
   36 |  int h,qw,we,er;
      |              ^~
ho_t4.cpp: In function 'void DJI2(int)':
ho_t4.cpp:61:8: warning: variable 'qw' set but not used [-Wunused-but-set-variable]
   61 |  int h,qw,we,er;
      |        ^~
ho_t4.cpp:61:14: warning: unused variable 'er' [-Wunused-variable]
   61 |  int h,qw,we,er;
      |              ^~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 2 ms 460 KB Output is correct
4 Correct 2 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 17 ms 488 KB Output is correct
11 Correct 18 ms 484 KB Output is correct
12 Correct 17 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 544 KB Output is correct
16 Correct 2 ms 480 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 62 ms 7976 KB Output is correct
2 Correct 65 ms 8964 KB Output is correct
3 Correct 70 ms 9108 KB Output is correct
4 Correct 2 ms 708 KB Output is correct
5 Correct 2 ms 588 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 352 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 43 ms 9152 KB Output is correct
10 Correct 63 ms 9100 KB Output is correct
11 Correct 58 ms 9160 KB Output is correct
12 Correct 55 ms 9120 KB Output is correct
13 Correct 63 ms 9064 KB Output is correct
14 Correct 57 ms 9156 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 460 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 42 ms 6228 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 60 ms 7900 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 53 ms 7996 KB Output is correct
9 Correct 56 ms 7996 KB Output is correct
10 Correct 64 ms 7956 KB Output is correct
11 Correct 53 ms 8816 KB Output is correct
12 Correct 73 ms 8900 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 64 ms 8832 KB Output is correct
20 Correct 53 ms 8820 KB Output is correct
21 Correct 82 ms 8924 KB Output is correct
22 Correct 71 ms 8908 KB Output is correct

Subtask #4
63.0 / 63.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 2 ms 460 KB Output is correct
4 Correct 2 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 17 ms 488 KB Output is correct
11 Correct 18 ms 484 KB Output is correct
12 Correct 17 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 544 KB Output is correct
16 Correct 2 ms 480 KB Output is correct
17 Correct 62 ms 7976 KB Output is correct
18 Correct 65 ms 8964 KB Output is correct
19 Correct 70 ms 9108 KB Output is correct
20 Correct 2 ms 708 KB Output is correct
21 Correct 2 ms 588 KB Output is correct
22 Correct 1 ms 460 KB Output is correct
23 Correct 1 ms 352 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 43 ms 9152 KB Output is correct
26 Correct 63 ms 9100 KB Output is correct
27 Correct 58 ms 9160 KB Output is correct
28 Correct 55 ms 9120 KB Output is correct
29 Correct 63 ms 9064 KB Output is correct
30 Correct 57 ms 9156 KB Output is correct
31 Correct 2 ms 460 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 42 ms 6228 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 60 ms 7900 KB Output is correct
36 Correct 0 ms 332 KB Output is correct
37 Correct 0 ms 332 KB Output is correct
38 Correct 53 ms 7996 KB Output is correct
39 Correct 56 ms 7996 KB Output is correct
40 Correct 64 ms 7956 KB Output is correct
41 Correct 53 ms 8816 KB Output is correct
42 Correct 73 ms 8900 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 64 ms 8832 KB Output is correct
50 Correct 53 ms 8820 KB Output is correct
51 Correct 82 ms 8924 KB Output is correct
52 Correct 71 ms 8908 KB Output is correct
53 Correct 67 ms 8916 KB Output is correct
54 Correct 98 ms 8916 KB Output is correct
55 Correct 88 ms 8888 KB Output is correct
56 Correct 3 ms 488 KB Output is correct
57 Correct 1 ms 588 KB Output is correct
58 Correct 852 ms 7308 KB Output is correct
59 Correct 506 ms 7244 KB Output is correct
60 Correct 660 ms 7332 KB Output is correct
61 Correct 501 ms 7332 KB Output is correct
62 Correct 556 ms 7292 KB Output is correct
63 Correct 624 ms 7324 KB Output is correct
64 Correct 978 ms 7484 KB Output is correct
65 Correct 885 ms 7496 KB Output is correct
66 Correct 948 ms 7480 KB Output is correct
67 Correct 44 ms 7180 KB Output is correct
68 Correct 57 ms 9132 KB Output is correct
69 Correct 51 ms 9052 KB Output is correct
70 Correct 74 ms 9124 KB Output is correct
71 Correct 71 ms 9164 KB Output is correct
72 Correct 77 ms 9272 KB Output is correct
73 Correct 83 ms 9128 KB Output is correct
74 Correct 75 ms 9140 KB Output is correct