| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 221965 |
2020-04-11T15:52:46 Z |
infinite_iq |
Pipes (BOI13_pipes) |
C++14 |
|
835 ms |
91256 KB |
#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#include <bits/stdc++.h>
using namespace std;
#define sqr 340
#define mid (l+r)/2
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define ins insert
#define era erase
#define C continue
#define mem(dp,i) memset(dp,i,sizeof(dp))
#define mset multiset
typedef long long ll;
typedef short int si;
typedef long double ld;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;
const ll inf=1e18;
const ld pai=acos(-1);
ll n , m , all ;
set<pll>v[500009];
ll val[500009] , ans[500009] , ret[500009] , VAL[500009] ,done[500009];;
ll start ;
ll calc(int node , ll p ){
done [node] = 1 ;
ll ret = 0 ;
for ( auto u : v[node] ) {
if ( done [u.fi] ) C ;
ret = calc ( u.fi , val[u.fi] - p) ;
break ;
}
return ret + p ;
}
void solve ( int node) {
done [node] = 1 ;
ll out = 0 ;
for ( auto u : v[node] ) {
if ( done [u.fi] ) C ;
val[u.fi] -= val[node] ;
ans [ u.se ] = val[node];
solve( u.fi ) ;
out = 1 ;
break;
}
if ( !out ) {
for ( auto u :v[node] ) {
if ( u.fi == start ) {
ans [ u.se ] = val[ node];
break ;
}
}
}
}
int main () {
mem ( ret , -1 ) ;
cin >> n >> m ;
for ( int i = 0 ; i < n ; i ++ ) cin >> val[i] ;
for ( int i = 0 ; i < m ; i ++ ) {
int a , b ;
cin >> a >> b ;
a -- , b -- ;
v[a].ins( { b , i } ) ;
v[b].ins( { a , i } ) ;
}
if ( m > n ) {
cout << 0 << endl ;
exit ( 0 ) ;
}
set<pll>s;
for ( int i = 0 ; i < n ; i ++ ) {
s.ins ( { v[i].size() , i } ) ;
}
while ( ( s.size() && s.begin()->fi==1 ) ) {
int node = s.begin() -> se ;
int to = v[node].begin() -> fi ;
int id = v[node].begin() -> se ;
s.era(s.begin());
v[node].era( v[node].begin() );
s.era ( { v[to].size() , to } ) ;
v[to].era( { node , id } ) ;
if ( v[to].size() ) s.ins ( { v[to].size() , to } ) ;
ans [ id ] = -val [ node ] ;
val [ to ] += -val[node];
val [ node ] = 0 ;
}
if ( s.size() && s.size() % 2 == 0 ) cout << 0 << endl , exit ( 0 ) ;
if ( !s.size() ) {
for ( int i = 0 ; i < m ; i ++ ) {
cout << -ans [i] *2 << endl ;
}
exit ( 0 ) ;
}
for ( auto u : s ) all += val[u.se] ;
all /= 2;
start = s.begin()->se;
val[start] = all - calc ( 0 , 0 ) ;
mem(done,0);
solve(0);
for ( int i = 0 ;i < m ;i ++ ) cout << -ans[i]*2 << endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
21 ms |
27776 KB |
Output is correct |
| 2 |
Correct |
20 ms |
27776 KB |
Output is correct |
| 3 |
Correct |
24 ms |
27904 KB |
Output is correct |
| 4 |
Correct |
521 ms |
48712 KB |
Output is correct |
| 5 |
Correct |
20 ms |
27776 KB |
Output is correct |
| 6 |
Correct |
20 ms |
27776 KB |
Output is correct |
| 7 |
Correct |
20 ms |
27776 KB |
Output is correct |
| 8 |
Correct |
23 ms |
27776 KB |
Output is correct |
| 9 |
Correct |
24 ms |
27904 KB |
Output is correct |
| 10 |
Correct |
26 ms |
28032 KB |
Output is correct |
| 11 |
Correct |
24 ms |
27904 KB |
Output is correct |
| 12 |
Correct |
26 ms |
27904 KB |
Output is correct |
| 13 |
Correct |
417 ms |
44152 KB |
Output is correct |
| 14 |
Correct |
482 ms |
47372 KB |
Output is correct |
| 15 |
Correct |
531 ms |
48760 KB |
Output is correct |
| 16 |
Correct |
433 ms |
45304 KB |
Output is correct |
| 17 |
Correct |
513 ms |
48444 KB |
Output is correct |
| 18 |
Correct |
528 ms |
48632 KB |
Output is correct |
| 19 |
Correct |
468 ms |
48504 KB |
Output is correct |
| 20 |
Correct |
21 ms |
27776 KB |
Output is correct |
| 21 |
Correct |
24 ms |
27904 KB |
Output is correct |
| 22 |
Correct |
529 ms |
48480 KB |
Output is correct |
| 23 |
Correct |
401 ms |
44320 KB |
Output is correct |
| 24 |
Correct |
510 ms |
48504 KB |
Output is correct |
| 25 |
Correct |
418 ms |
45336 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
23 ms |
31616 KB |
Output isn't correct |
| 2 |
Incorrect |
26 ms |
31872 KB |
Output isn't correct |
| 3 |
Correct |
265 ms |
46968 KB |
Output is correct |
| 4 |
Correct |
171 ms |
40952 KB |
Output is correct |
| 5 |
Correct |
176 ms |
40696 KB |
Output is correct |
| 6 |
Correct |
835 ms |
91128 KB |
Output is correct |
| 7 |
Incorrect |
23 ms |
31616 KB |
Output isn't correct |
| 8 |
Incorrect |
24 ms |
31616 KB |
Output isn't correct |
| 9 |
Correct |
20 ms |
27776 KB |
Output is correct |
| 10 |
Correct |
24 ms |
27776 KB |
Output is correct |
| 11 |
Correct |
20 ms |
27776 KB |
Output is correct |
| 12 |
Correct |
20 ms |
27776 KB |
Output is correct |
| 13 |
Correct |
21 ms |
27776 KB |
Output is correct |
| 14 |
Incorrect |
23 ms |
31616 KB |
Output isn't correct |
| 15 |
Incorrect |
25 ms |
31872 KB |
Output isn't correct |
| 16 |
Incorrect |
26 ms |
31872 KB |
Output isn't correct |
| 17 |
Correct |
21 ms |
27904 KB |
Output is correct |
| 18 |
Correct |
22 ms |
27904 KB |
Output is correct |
| 19 |
Correct |
21 ms |
27904 KB |
Output is correct |
| 20 |
Correct |
22 ms |
27904 KB |
Output is correct |
| 21 |
Correct |
23 ms |
28032 KB |
Output is correct |
| 22 |
Incorrect |
29 ms |
31872 KB |
Output isn't correct |
| 23 |
Incorrect |
387 ms |
48632 KB |
Output isn't correct |
| 24 |
Incorrect |
479 ms |
52472 KB |
Output isn't correct |
| 25 |
Correct |
265 ms |
46948 KB |
Output is correct |
| 26 |
Correct |
174 ms |
41080 KB |
Output is correct |
| 27 |
Correct |
171 ms |
40952 KB |
Output is correct |
| 28 |
Correct |
192 ms |
41848 KB |
Output is correct |
| 29 |
Correct |
649 ms |
78712 KB |
Output is correct |
| 30 |
Incorrect |
426 ms |
52088 KB |
Output isn't correct |
| 31 |
Incorrect |
432 ms |
52472 KB |
Output isn't correct |
| 32 |
Incorrect |
524 ms |
52344 KB |
Output isn't correct |
| 33 |
Correct |
252 ms |
48120 KB |
Output is correct |
| 34 |
Correct |
175 ms |
41080 KB |
Output is correct |
| 35 |
Correct |
176 ms |
40952 KB |
Output is correct |
| 36 |
Correct |
176 ms |
41208 KB |
Output is correct |
| 37 |
Correct |
834 ms |
91256 KB |
Output is correct |
| 38 |
Incorrect |
471 ms |
52460 KB |
Output isn't correct |
| 39 |
Incorrect |
500 ms |
52216 KB |
Output isn't correct |
| 40 |
Incorrect |
449 ms |
52476 KB |
Output isn't correct |
| 41 |
Correct |
203 ms |
48024 KB |
Output is correct |
| 42 |
Correct |
178 ms |
41140 KB |
Output is correct |
| 43 |
Correct |
172 ms |
41056 KB |
Output is correct |
| 44 |
Correct |
169 ms |
40696 KB |
Output is correct |
| 45 |
Correct |
768 ms |
83808 KB |
Output is correct |
| 46 |
Incorrect |
485 ms |
52728 KB |
Output isn't correct |
| 47 |
Incorrect |
454 ms |
52344 KB |
Output isn't correct |
| 48 |
Incorrect |
461 ms |
52512 KB |
Output isn't correct |
| 49 |
Correct |
288 ms |
46840 KB |
Output is correct |
| 50 |
Correct |
174 ms |
40952 KB |
Output is correct |
| 51 |
Correct |
178 ms |
41056 KB |
Output is correct |
| 52 |
Correct |
170 ms |
40824 KB |
Output is correct |
| 53 |
Correct |
760 ms |
84856 KB |
Output is correct |
| 54 |
Incorrect |
459 ms |
52088 KB |
Output isn't correct |
