oj.uz

Submission #207269

# Submission time Handle Problem Language Result Execution time Memory
207269 2020-03-06T21:01:32 Z MvC Pipes (BOI13_pipes) C++11
70 / 100
 112 ms 19396 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)
	{
		viz[x]=1;
		for(i=0;i<(int)a[x].size();i++)
		{
			y=ex[a[x][i]]^ey[a[x][i]]^x;
			if((!deg[y] || viz[y]) && y!=st)continue;
			vc.pb(a[x][i]);
			x=y;
			break;
		}
		if(st==x)break;
	}
	if((int)vc.size()%2==0)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
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 13 ms 12152 KB Output isn't correct
2 Incorrect 12 ms 12156 KB Output isn't correct
3 Incorrect 13 ms 12280 KB Output isn't correct
4 Incorrect 80 ms 18300 KB Output isn't correct
5 Incorrect 12 ms 12152 KB Output isn't correct
6 Incorrect 12 ms 12152 KB Output isn't correct
7 Incorrect 14 ms 12152 KB Output isn't correct
8 Incorrect 13 ms 12152 KB Output isn't correct
9 Incorrect 12 ms 12152 KB Output isn't correct
10 Incorrect 12 ms 12152 KB Output isn't correct
11 Incorrect 13 ms 12152 KB Output isn't correct
12 Incorrect 12 ms 12156 KB Output isn't correct
13 Incorrect 64 ms 17020 KB Output isn't correct
14 Incorrect 79 ms 17912 KB Output isn't correct
15 Incorrect 100 ms 18296 KB Output isn't correct
16 Incorrect 65 ms 17400 KB Output isn't correct
17 Incorrect 85 ms 18296 KB Output isn't correct
18 Incorrect 77 ms 18296 KB Output isn't correct
19 Incorrect 83 ms 18040 KB Output isn't correct
20 Incorrect 15 ms 12152 KB Output isn't correct
21 Incorrect 13 ms 12152 KB Output isn't correct
22 Incorrect 78 ms 18296 KB Output isn't correct
23 Incorrect 63 ms 17016 KB Output isn't correct
24 Incorrect 88 ms 18296 KB Output isn't correct
25 Incorrect 70 ms 17272 KB Output isn't correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 12152 KB Output is correct
2 Correct 12 ms 12152 KB Output is correct
3 Correct 77 ms 18168 KB Output is correct
4 Correct 13 ms 12152 KB Output is correct
5 Correct 12 ms 12024 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 14 ms 12152 KB Output is correct
8 Correct 15 ms 12152 KB Output is correct
9 Correct 12 ms 12096 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 15 ms 12064 KB Output is correct
12 Correct 12 ms 12024 KB Output is correct
13 Correct 13 ms 12048 KB Output is correct
14 Correct 13 ms 12152 KB Output is correct
15 Correct 15 ms 12152 KB Output is correct
16 Correct 15 ms 12152 KB Output is correct
17 Correct 12 ms 12280 KB Output is correct
18 Correct 13 ms 12024 KB Output is correct
19 Correct 12 ms 12024 KB Output is correct
20 Correct 15 ms 12028 KB Output is correct
21 Correct 13 ms 12024 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 79 ms 18036 KB Output is correct
24 Correct 112 ms 19316 KB Output is correct
25 Correct 79 ms 18168 KB Output is correct
26 Correct 12 ms 12152 KB Output is correct
27 Correct 12 ms 12024 KB Output is correct
28 Correct 15 ms 12024 KB Output is correct
29 Correct 12 ms 12024 KB Output is correct
30 Correct 92 ms 19060 KB Output is correct
31 Correct 98 ms 19316 KB Output is correct
32 Correct 99 ms 19192 KB Output is correct
33 Correct 85 ms 18424 KB Output is correct
34 Correct 12 ms 12024 KB Output is correct
35 Correct 15 ms 12024 KB Output is correct
36 Correct 15 ms 12028 KB Output is correct
37 Correct 15 ms 12156 KB Output is correct
38 Correct 105 ms 19396 KB Output is correct
39 Correct 88 ms 19064 KB Output is correct
40 Correct 97 ms 19316 KB Output is correct
41 Correct 91 ms 18656 KB Output is correct
42 Correct 15 ms 12104 KB Output is correct
43 Correct 12 ms 12024 KB Output is correct
44 Correct 12 ms 12028 KB Output is correct
45 Correct 12 ms 12024 KB Output is correct
46 Correct 103 ms 19188 KB Output is correct
47 Correct 94 ms 19188 KB Output is correct
48 Correct 95 ms 19332 KB Output is correct
49 Correct 81 ms 17916 KB Output is correct
50 Correct 13 ms 12024 KB Output is correct
51 Correct 15 ms 12024 KB Output is correct
52 Correct 12 ms 12024 KB Output is correct
53 Correct 13 ms 12024 KB Output is correct
54 Correct 96 ms 19060 KB Output is correct