Submission #207253

# Submission time Handle Problem Language Result Execution time Memory
207253 2020-03-06T20:38:05 Z MvC Pipes (BOI13_pipes) C++11
65 / 100
357 ms 131076 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);
			}
		}
	}
	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]);
			x=y;
			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;
}
# Verdict Execution time Memory Grader output
1 Correct 12 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 15 ms 12280 KB Output is correct
4 Correct 93 ms 19036 KB Output is correct
5 Correct 12 ms 12152 KB Output is correct
6 Correct 12 ms 12152 KB Output is correct
7 Correct 12 ms 12152 KB Output is correct
8 Correct 13 ms 12152 KB Output is correct
9 Correct 13 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 14 ms 12280 KB Output is correct
13 Correct 71 ms 17784 KB Output is correct
14 Correct 91 ms 18808 KB Output is correct
15 Correct 89 ms 19160 KB Output is correct
16 Correct 73 ms 18168 KB Output is correct
17 Correct 86 ms 19036 KB Output is correct
18 Correct 96 ms 19168 KB Output is correct
19 Correct 95 ms 18808 KB Output is correct
20 Correct 12 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 98 ms 19172 KB Output is correct
23 Correct 70 ms 17764 KB Output is correct
24 Correct 89 ms 19160 KB Output is correct
25 Correct 70 ms 18040 KB Output is correct
# Verdict Execution time Memory Grader output
1 Runtime error 302 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Runtime error 297 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
3 Runtime error 342 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
4 Correct 13 ms 12024 KB Output is correct
5 Correct 12 ms 12024 KB Output is correct
6 Correct 12 ms 12028 KB Output is correct
7 Runtime error 293 ms 131072 KB Execution killed with signal 9 (could be triggered by violating memory limits)
8 Runtime error 315 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
9 Runtime error 296 ms 131072 KB Execution killed with signal 9 (could be triggered by violating memory limits)
10 Correct 13 ms 12024 KB Output is correct
11 Correct 12 ms 12024 KB Output is correct
12 Correct 13 ms 12152 KB Output is correct
13 Correct 13 ms 12024 KB Output is correct
14 Runtime error 316 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
15 Runtime error 295 ms 131072 KB Execution killed with signal 9 (could be triggered by violating memory limits)
16 Runtime error 301 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
17 Runtime error 296 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
18 Correct 12 ms 12152 KB Output is correct
19 Correct 12 ms 12156 KB Output is correct
20 Correct 12 ms 12024 KB Output is correct
21 Correct 12 ms 12024 KB Output is correct
22 Runtime error 300 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
23 Runtime error 332 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
24 Runtime error 357 ms 131072 KB Execution killed with signal 9 (could be triggered by violating memory limits)
25 Runtime error 336 ms 131072 KB Execution killed with signal 9 (could be triggered by violating memory limits)
26 Correct 13 ms 12152 KB Output is correct
27 Correct 13 ms 12024 KB Output is correct
28 Correct 12 ms 12024 KB Output is correct
29 Correct 12 ms 12024 KB Output is correct
30 Runtime error 344 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
31 Runtime error 334 ms 131072 KB Execution killed with signal 9 (could be triggered by violating memory limits)
32 Runtime error 350 ms 131072 KB Execution killed with signal 9 (could be triggered by violating memory limits)
33 Runtime error 341 ms 131072 KB Execution killed with signal 9 (could be triggered by violating memory limits)
34 Correct 13 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 12024 KB Output is correct
38 Runtime error 345 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
39 Runtime error 344 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
40 Runtime error 352 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
41 Runtime error 336 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
42 Correct 12 ms 12024 KB Output is correct
43 Correct 13 ms 12024 KB Output is correct
44 Correct 12 ms 12024 KB Output is correct
45 Correct 13 ms 12024 KB Output is correct
46 Runtime error 351 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
47 Runtime error 339 ms 131072 KB Execution killed with signal 9 (could be triggered by violating memory limits)
48 Runtime error 348 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
49 Runtime error 347 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
50 Correct 13 ms 12024 KB Output is correct
51 Correct 16 ms 12024 KB Output is correct
52 Correct 12 ms 12152 KB Output is correct
53 Correct 12 ms 12024 KB Output is correct
54 Runtime error 354 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)