#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;
}
| # |
결과 |
실행 시간 |
메모리 |
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 |
| # |
결과 |
실행 시간 |
메모리 |
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) |
