답안 #64652 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
64652	2018-08-05T10:09:45 Z	jangwonyoung	Arranging Tickets (JOI17_arranging_tickets)	C++14	65 / 100	6000 ms	47972 KB

arranging_tickets

#include<iostream>
#include<queue>
using namespace std;
typedef long long ll;
#define fi first
#define se second
#define pb push_back
int n,m,s,t;
int a[100001];
int b[100001];
ll c[100001];
ll eq[200001];
ll d[200003],d2[200003];
bool vis[200003],inq[200003];
ll cp[1000001],wt[1000001];
vector<pair<int,int> >adj[200003];
int sz;
bool fuck[100001];
int q[3][200003];
int st[3],en[3];
void init(){
	for(int i=1; i<=t ;i++){
		adj[i].clear();
		d[i]=d2[i]=0;
	}
	sz=0;
}
void addedge(int u,int v,ll cap,ll wei){
	cp[sz]=cap;cp[sz^1]=0;
	wt[sz]=wei;wt[sz^1]=-wei;
	adj[u].pb({v,sz});
	adj[v].pb({u,sz^1});
	sz+=2;
}
ll dfs(int id,ll f){
	if(id==t) return f;
	if(vis[id]) return 0;
	vis[id]=true;
	ll res=0;
	for(auto cur:adj[id]){
		if(d[cur.fi]==d[id]+wt[cur.se]+d2[id]-d2[cur.fi] && cp[cur.se]>0){
			ll tmp=dfs(cur.fi,min(f,cp[cur.se]));
			if(tmp){
				cp[cur.se]-=tmp;
				cp[cur.se^1]+=tmp;
				f-=tmp;
				res+=tmp;
			}
			if(f==0) return res;
		}
	}
	if(res!=0) vis[id]=false;
	return res;
}
void sp(){
	for(int i=1; i<=t ;i++){
		d2[i]+=d[i];
		d[i]=1e18;
	}
	st[0]=st[1]=st[2]=en[0]=1;
	en[1]=en[2]=0;
	q[0][1]=s;
	d[s]=0;
	for(int j=0; j<=2 ;j++){
		while(st[j]<=en[j]){
			int cur=q[j][st[j]];
			st[j]++;
			if(d[cur]<j) continue;
			for(auto newi:adj[cur]){
				if(d[newi.fi]>d[cur]+wt[newi.se]+d2[cur]-d2[newi.fi] && cp[newi.se]>0){
					d[newi.fi]=d[cur]+wt[newi.se]+d2[cur]-d2[newi.fi];
					if(d[newi.fi]<=2){
						en[d[newi.fi]]++;
						q[d[newi.fi]][en[d[newi.fi]]]=newi.fi;
					}
				}
			}
		}
	}
}
ll flow(){
	ll res=0;//min cost 
	while(true){
		sp();
		if(d[t]==1e18) return res;
		for(int j=1; j<=t ;j++) vis[j]=false;
		ll tmp=dfs(s,1e18);
		res+=tmp*(d[t]+d2[t]);
	}
}
int main(){
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cin >> n >> m;
	s=n+1,t=n+2;
	for(int i=1; i<=m ;i++){
		cin >> a[i] >> b[i] >> c[i];
		if(a[i]==b[i]){
			fuck[i]=true;
			continue;
		}
		if(a[i]>b[i]) swap(a[i],b[i]);
		b[i]--;
		if(a[i]==1){
			eq[n]-=c[i];
			eq[b[i]]+=c[i];
		}
		else{
			eq[a[i]-1]+=c[i];
			eq[b[i]]-=c[i];
		}
	}
	ll ans=1e18;
	for(int i=0; i<2 ;i++){
		init();
		bool odd=i;
		for(int j=1; j<=n ;j++){
			ll cur=eq[j]-odd;
			odd=false;
			if(cur&1){
				cur++;
				odd=true;
			}
			if(cur>0) addedge(s,j,cur/2,0);
			else addedge(j,t,-cur/2,0);
			if(j==1) addedge(1,n,1e18,2);
			else addedge(j,j-1,1e18,0);
		}
		for(int j=1; j<=m ;j++){
			if(fuck[j]) continue;
			if(a[j]==1) addedge(b[j],n,c[j],1);
			else addedge(a[j]-1,b[j],c[j],1);
		}
		ans=min(ans,flow()+i);
	}
	cout << ans << endl;
}

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	5112 KB	Output is correct
2	Correct	7 ms	5112 KB	Output is correct
3	Correct	7 ms	5168 KB	Output is correct
4	Correct	6 ms	5244 KB	Output is correct
5	Correct	7 ms	5320 KB	Output is correct
6	Correct	6 ms	5320 KB	Output is correct
7	Correct	7 ms	5320 KB	Output is correct
8	Correct	7 ms	5320 KB	Output is correct
9	Correct	5 ms	5404 KB	Output is correct
10	Correct	6 ms	5404 KB	Output is correct
11	Correct	6 ms	5484 KB	Output is correct
12	Correct	5 ms	5484 KB	Output is correct
13	Correct	6 ms	5484 KB	Output is correct
14	Correct	7 ms	5484 KB	Output is correct
15	Correct	7 ms	5484 KB	Output is correct

Subtask #2
35.0 / 35.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	5112 KB	Output is correct
2	Correct	7 ms	5112 KB	Output is correct
3	Correct	7 ms	5168 KB	Output is correct
4	Correct	6 ms	5244 KB	Output is correct
5	Correct	7 ms	5320 KB	Output is correct
6	Correct	6 ms	5320 KB	Output is correct
7	Correct	7 ms	5320 KB	Output is correct
8	Correct	7 ms	5320 KB	Output is correct
9	Correct	5 ms	5404 KB	Output is correct
10	Correct	6 ms	5404 KB	Output is correct
11	Correct	6 ms	5484 KB	Output is correct
12	Correct	5 ms	5484 KB	Output is correct
13	Correct	6 ms	5484 KB	Output is correct
14	Correct	7 ms	5484 KB	Output is correct
15	Correct	7 ms	5484 KB	Output is correct
16	Correct	7 ms	5484 KB	Output is correct
17	Correct	7 ms	5484 KB	Output is correct
18	Correct	8 ms	5500 KB	Output is correct
19	Correct	10 ms	5500 KB	Output is correct
20	Correct	9 ms	5500 KB	Output is correct
21	Correct	9 ms	5500 KB	Output is correct
22	Correct	7 ms	5500 KB	Output is correct
23	Correct	8 ms	5500 KB	Output is correct
24	Correct	8 ms	5500 KB	Output is correct
25	Correct	9 ms	5500 KB	Output is correct
26	Correct	10 ms	5500 KB	Output is correct
27	Correct	8 ms	5500 KB	Output is correct

Subtask #3
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	5112 KB	Output is correct
2	Correct	7 ms	5112 KB	Output is correct
3	Correct	7 ms	5168 KB	Output is correct
4	Correct	6 ms	5244 KB	Output is correct
5	Correct	7 ms	5320 KB	Output is correct
6	Correct	6 ms	5320 KB	Output is correct
7	Correct	7 ms	5320 KB	Output is correct
8	Correct	7 ms	5320 KB	Output is correct
9	Correct	5 ms	5404 KB	Output is correct
10	Correct	6 ms	5404 KB	Output is correct
11	Correct	6 ms	5484 KB	Output is correct
12	Correct	5 ms	5484 KB	Output is correct
13	Correct	6 ms	5484 KB	Output is correct
14	Correct	7 ms	5484 KB	Output is correct
15	Correct	7 ms	5484 KB	Output is correct
16	Correct	7 ms	5484 KB	Output is correct
17	Correct	7 ms	5484 KB	Output is correct
18	Correct	8 ms	5500 KB	Output is correct
19	Correct	10 ms	5500 KB	Output is correct
20	Correct	9 ms	5500 KB	Output is correct
21	Correct	9 ms	5500 KB	Output is correct
22	Correct	7 ms	5500 KB	Output is correct
23	Correct	8 ms	5500 KB	Output is correct
24	Correct	8 ms	5500 KB	Output is correct
25	Correct	9 ms	5500 KB	Output is correct
26	Correct	10 ms	5500 KB	Output is correct
27	Correct	8 ms	5500 KB	Output is correct
28	Correct	49 ms	6268 KB	Output is correct
29	Correct	58 ms	6268 KB	Output is correct
30	Correct	62 ms	6408 KB	Output is correct
31	Correct	39 ms	6408 KB	Output is correct
32	Correct	44 ms	6408 KB	Output is correct
33	Correct	29 ms	6408 KB	Output is correct
34	Correct	32 ms	6408 KB	Output is correct
35	Correct	18 ms	6408 KB	Output is correct
36	Correct	32 ms	6408 KB	Output is correct
37	Correct	10 ms	6408 KB	Output is correct
38	Correct	11 ms	6408 KB	Output is correct
39	Correct	9 ms	6408 KB	Output is correct

Subtask #4
0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	5112 KB	Output is correct
2	Correct	7 ms	5112 KB	Output is correct
3	Correct	7 ms	5168 KB	Output is correct
4	Correct	6 ms	5244 KB	Output is correct
5	Correct	7 ms	5320 KB	Output is correct
6	Correct	6 ms	5320 KB	Output is correct
7	Correct	7 ms	5320 KB	Output is correct
8	Correct	7 ms	5320 KB	Output is correct
9	Correct	5 ms	5404 KB	Output is correct
10	Correct	6 ms	5404 KB	Output is correct
11	Correct	6 ms	5484 KB	Output is correct
12	Correct	5 ms	5484 KB	Output is correct
13	Correct	6 ms	5484 KB	Output is correct
14	Correct	7 ms	5484 KB	Output is correct
15	Correct	7 ms	5484 KB	Output is correct
16	Correct	7 ms	5484 KB	Output is correct
17	Correct	7 ms	5484 KB	Output is correct
18	Correct	8 ms	5500 KB	Output is correct
19	Correct	10 ms	5500 KB	Output is correct
20	Correct	9 ms	5500 KB	Output is correct
21	Correct	9 ms	5500 KB	Output is correct
22	Correct	7 ms	5500 KB	Output is correct
23	Correct	8 ms	5500 KB	Output is correct
24	Correct	8 ms	5500 KB	Output is correct
25	Correct	9 ms	5500 KB	Output is correct
26	Correct	10 ms	5500 KB	Output is correct
27	Correct	8 ms	5500 KB	Output is correct
28	Correct	49 ms	6268 KB	Output is correct
29	Correct	58 ms	6268 KB	Output is correct
30	Correct	62 ms	6408 KB	Output is correct
31	Correct	39 ms	6408 KB	Output is correct
32	Correct	44 ms	6408 KB	Output is correct
33	Correct	29 ms	6408 KB	Output is correct
34	Correct	32 ms	6408 KB	Output is correct
35	Correct	18 ms	6408 KB	Output is correct
36	Correct	32 ms	6408 KB	Output is correct
37	Correct	10 ms	6408 KB	Output is correct
38	Correct	11 ms	6408 KB	Output is correct
39	Correct	9 ms	6408 KB	Output is correct
40	Execution timed out	6098 ms	47972 KB	Time limit exceeded
41	Halted	0 ms	0 KB	-

Subtask #5
0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	5112 KB	Output is correct
2	Correct	7 ms	5112 KB	Output is correct
3	Correct	7 ms	5168 KB	Output is correct
4	Correct	6 ms	5244 KB	Output is correct
5	Correct	7 ms	5320 KB	Output is correct
6	Correct	6 ms	5320 KB	Output is correct
7	Correct	7 ms	5320 KB	Output is correct
8	Correct	7 ms	5320 KB	Output is correct
9	Correct	5 ms	5404 KB	Output is correct
10	Correct	6 ms	5404 KB	Output is correct
11	Correct	6 ms	5484 KB	Output is correct
12	Correct	5 ms	5484 KB	Output is correct
13	Correct	6 ms	5484 KB	Output is correct
14	Correct	7 ms	5484 KB	Output is correct
15	Correct	7 ms	5484 KB	Output is correct
16	Correct	7 ms	5484 KB	Output is correct
17	Correct	7 ms	5484 KB	Output is correct
18	Correct	8 ms	5500 KB	Output is correct
19	Correct	10 ms	5500 KB	Output is correct
20	Correct	9 ms	5500 KB	Output is correct
21	Correct	9 ms	5500 KB	Output is correct
22	Correct	7 ms	5500 KB	Output is correct
23	Correct	8 ms	5500 KB	Output is correct
24	Correct	8 ms	5500 KB	Output is correct
25	Correct	9 ms	5500 KB	Output is correct
26	Correct	10 ms	5500 KB	Output is correct
27	Correct	8 ms	5500 KB	Output is correct
28	Correct	49 ms	6268 KB	Output is correct
29	Correct	58 ms	6268 KB	Output is correct
30	Correct	62 ms	6408 KB	Output is correct
31	Correct	39 ms	6408 KB	Output is correct
32	Correct	44 ms	6408 KB	Output is correct
33	Correct	29 ms	6408 KB	Output is correct
34	Correct	32 ms	6408 KB	Output is correct
35	Correct	18 ms	6408 KB	Output is correct
36	Correct	32 ms	6408 KB	Output is correct
37	Correct	10 ms	6408 KB	Output is correct
38	Correct	11 ms	6408 KB	Output is correct
39	Correct	9 ms	6408 KB	Output is correct
40	Execution timed out	6098 ms	47972 KB	Time limit exceeded
41	Halted	0 ms	0 KB	-

답안 #64652

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 35.0 / 35.0

Subtask #3 20.0 / 20.0

Subtask #4 0 / 20.0

Subtask #5 0 / 15.0

Subtask #1
10.0 / 10.0

Subtask #2
35.0 / 35.0

Subtask #3
20.0 / 20.0

Subtask #4
0 / 20.0

Subtask #5
0 / 15.0