oj.uz

Submission #207264

# Submission time Handle Problem Language Result Execution time Memory
207264 2020-03-06T20:53:07 Z MvC Pipes (BOI13_pipes) C++11
74.0741 / 100
 100 ms 18792 KB 
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=5e5+50;
const int mod=1e9+7;
using namespace std;
int n,m,i,ex[nmax],ey[nmax],deg[nmax],vl[nmax],vl1[nmax],rs[nmax],viz[nmax],g[nmax],cur,x,y,st;
vector<int>vc,a[nmax];
queue<int>q;
int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>n>>m;
	if(m>n)rc(0);
	for(i=1;i<=n;i++)cin>>g[i];
	for(i=1;i<=m;i++)
	{
		cin>>ex[i]>>ey[i];
		a[ex[i]].pb(i);
		a[ey[i]].pb(i);
	}
	for(i=1;i<=n;i++)
	{
		deg[i]=(int)a[i].size();
		if(deg[i]==1)q.push(i),viz[i]=1;
	}
	while(!q.empty())
	{
		x=q.front();
		q.pop();
		for(i=0;i<(int)a[x].size();i++)
		{
			y=ex[a[x][i]]^ey[a[x][i]]^x;
			if(!deg[y])continue;
			rs[a[x][i]]=2*(g[x]-vl[x]);
			vl[y]+=g[x]-vl[x];
			vl[x]=g[x];
			deg[y]--;
			deg[x]--;
			if(deg[y]==1)
			{
				viz[y]=1;
				q.push(y);
			}
		}
	}
	x=0;
	for(i=1;i<=n;i++)if(deg[i])x=i;
	st=x;
	while(1)
	{
		for(i=0;i<(int)a[x].size();i++)
		{
			y=ex[a[x][i]]^ey[a[x][i]]^x;
			if(!deg[y])continue;
			vc.pb(a[x][i]);
			y=x;
			break;
		}
		if(st==x)break;
	}
	if((int)vc.size()&1)rc(0);
	/*for(i=1;i<=n;i++)vl1[i]=vl[i];
	x=st;
	for(i=0;i<(int)vc.size();i++)
	{
		y=ex[vc[i]]^ey[vc[i]]^x;
		vl1[y]+=g[x]-vl1[x];
		vl1[x]=g[x];
		x=y;
	}
	cur=(g[x]-vl1[x])/2;
	x=st;
	for(i=0;i<(int)vc.size();i++)
	{
		y=ex[vc[i]]^ey[vc[i]]^x;
		cur+=g[x]-vl[x];
		vl[y]+=cur;
		vl[x]+=cur;
		rs[vc[i]]=2*cur;
		cur=0;
		x=y;
	}*/
	for(i=1;i<=m;i++)cout<<rs[i]<<'\n';
	return 0;
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12152 KB Output is correct
2 Correct 12 ms 12152 KB Output is correct
3 Correct 13 ms 12280 KB Output is correct
4 Correct 94 ms 18636 KB Output is correct
5 Correct 13 ms 12152 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 12 ms 12152 KB Output is correct
8 Correct 12 ms 12152 KB Output is correct
9 Correct 12 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 13 ms 12172 KB Output is correct
13 Correct 70 ms 17400 KB Output is correct
14 Correct 94 ms 18424 KB Output is correct
15 Correct 87 ms 18776 KB Output is correct
16 Correct 71 ms 17784 KB Output is correct
17 Correct 88 ms 18780 KB Output is correct
18 Correct 90 ms 18792 KB Output is correct
19 Correct 100 ms 18552 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 87 ms 18776 KB Output is correct
23 Correct 67 ms 17400 KB Output is correct
24 Correct 86 ms 18776 KB Output is correct
25 Correct 73 ms 17656 KB Output is correct

Subtask #2
44.0740740741 / 70.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 ms 12156 KB Output isn't correct
2 Incorrect 12 ms 12152 KB Output isn't correct
3 Correct 67 ms 17912 KB Output is correct
4 Correct 12 ms 12024 KB Output is correct
5 Correct 12 ms 12024 KB Output is correct
6 Correct 12 ms 12152 KB Output is correct
7 Incorrect 12 ms 12152 KB Output isn't correct
8 Incorrect 12 ms 12152 KB Output isn't correct
9 Correct 12 ms 12152 KB Output is correct
10 Correct 15 ms 12024 KB Output is correct
11 Correct 12 ms 12152 KB Output is correct
12 Correct 14 ms 12152 KB Output is correct
13 Correct 14 ms 12152 KB Output is correct
14 Incorrect 12 ms 12156 KB Output isn't correct
15 Incorrect 12 ms 12152 KB Output isn't correct
16 Incorrect 12 ms 12152 KB Output isn't correct
17 Correct 14 ms 12152 KB Output is correct
18 Correct 13 ms 12200 KB Output is correct
19 Correct 12 ms 12024 KB Output is correct
20 Correct 14 ms 12152 KB Output is correct
21 Correct 12 ms 12152 KB Output is correct
22 Incorrect 13 ms 12152 KB Output isn't correct
23 Incorrect 58 ms 17016 KB Output isn't correct
24 Incorrect 73 ms 18168 KB Output isn't correct
25 Correct 72 ms 17912 KB Output is correct
26 Correct 12 ms 12024 KB Output is correct
27 Correct 13 ms 12152 KB Output is correct
28 Correct 14 ms 12024 KB Output is correct
29 Correct 12 ms 12024 KB Output is correct
30 Incorrect 78 ms 17836 KB Output isn't correct
31 Incorrect 67 ms 18040 KB Output isn't correct
32 Incorrect 82 ms 18192 KB Output isn't correct
33 Correct 76 ms 18296 KB Output is correct
34 Correct 12 ms 12024 KB Output is correct
35 Correct 12 ms 12024 KB Output is correct
36 Correct 12 ms 12024 KB Output is correct
37 Correct 12 ms 12152 KB Output is correct
38 Incorrect 75 ms 18040 KB Output isn't correct
39 Incorrect 79 ms 18296 KB Output isn't correct
40 Incorrect 70 ms 18168 KB Output isn't correct
41 Correct 67 ms 18040 KB Output is correct
42 Correct 12 ms 12024 KB Output is correct
43 Correct 12 ms 12024 KB Output is correct
44 Correct 14 ms 12024 KB Output is correct
45 Correct 14 ms 12156 KB Output is correct
46 Incorrect 79 ms 18040 KB Output isn't correct
47 Incorrect 73 ms 18168 KB Output isn't correct
48 Incorrect 66 ms 18040 KB Output isn't correct
49 Correct 75 ms 17912 KB Output is correct
50 Correct 13 ms 12152 KB Output is correct
51 Correct 12 ms 12024 KB Output is correct
52 Correct 12 ms 12024 KB Output is correct
53 Correct 12 ms 12024 KB Output is correct
54 Incorrect 77 ms 18040 KB Output isn't correct