| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 31293 |
2017-08-17T22:59:54 Z |
imaxblue |
Pipes (BOI13_pipes) |
C++14 |
|
679 ms |
23792 KB |
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mp make_pair
#define pb push_back
#define x first
#define y second
#define pii pair<int, int>
#define p3i pair<pii, int>
#define pll pair<ll, ll>
#define p3l pair<pll, ll>
#define lseg L, (L+R)/2, N*2+1
#define rseg (L+R)/2+1, R, N*2+2
#define ub upper_bound
#define lb lower_bound
#define pq priority_queue
#define MN 1000000007
#define fox(k, x) for (int k=0; k<x; ++k)
#define fox1(k, x) for (int k=1; k<=x; ++k)
#define foxr(k, x) for (int k=x-1; k>=0; --k)
#define fox1r(k, x) for (int k=x; k>0; --k)
#define ms multiset
#define flood(x) memset(x, 0x3f3f3f3f, sizeof x)
#define drain(x) memset(x, 0, sizeof x)
int n, m, a, b, N;
ll c[100005], f[500005], k;
int in[100005], u[100005];
bool u2[100005];
vector<pii> v[100005], s;
queue<int> q;
void dfs(int N, int P, int C){
//cout << N << ' ' << C << endl;
if (u[N]){
//cout << "*" << endl;
if (u[N]==C){
cout << 0 << endl;
exit(0);
}
if (u2[N]) return;
s.pb(mp(N, -1));
fox(l, s.size()-1){
u2[s[l].x]=1;
c[s[l+1].x]-=c[s[l].x];
f[s[l].y]+=c[s[l].x];
//cout << s[l].y << ' ' << f[s[l].y] << endl;
}
k=c[s[0].x]/2;
fox(l, s.size()-1){
f[s[l].y]+=k;
k*=-1;
}
s.pop_back();
return;
}
u[N]=C;
fox(l, v[N].size()){
if (in[v[N][l].x]==0 || v[N][l].x==P) continue;
s.pb(mp(N, v[N][l].y));
dfs(v[N][l].x, N, 3-C);
s.pop_back();
}
}
int main(){
cin >> n >> m;
fox1(l, n) cin >> c[l];
fox(l, m){
cin >> a >> b;
v[a].pb(mp(b, l));
v[b].pb(mp(a, l));
in[a]++; in[b]++;
}
fox1(l, n){
if (in[l]==1) q.push(l);
}
while(!q.empty()){
N=q.front(); q.pop();
if (in[N]==0) continue;
in[N]--;
fox(l, v[N].size()){
if (in[v[N][l].x]==0) continue;
c[v[N][l].x]-=c[N];
f[v[N][l].y]=c[N];
//cout << N << ' ' << v[N][l].y << ' ' << c[N] << endl;
in[v[N][l].x]--;
if (in[v[N][l].x]==1) q.push(v[N][l].x);
}
}
fox1(l, n){
if (in[l]==0 || u[l]) continue;
dfs(l, -1, 1);
}
/*fox(l, m){
cout << f[l]*2 << endl;
}*/
return 0;
}
Compilation message
pipes.cpp: In function 'void dfs(int, int, int)':
pipes.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
#define fox(k, x) for (int k=0; k<x; ++k)
^
pipes.cpp:42:9: note: in expansion of macro 'fox'
fox(l, s.size()-1){
^
pipes.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
#define fox(k, x) for (int k=0; k<x; ++k)
^
pipes.cpp:49:9: note: in expansion of macro 'fox'
fox(l, s.size()-1){
^
pipes.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
#define fox(k, x) for (int k=0; k<x; ++k)
^
pipes.cpp:58:5: note: in expansion of macro 'fox'
fox(l, v[N].size()){
^
pipes.cpp: In function 'int main()':
pipes.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
#define fox(k, x) for (int k=0; k<x; ++k)
^
pipes.cpp:81:9: note: in expansion of macro 'fox'
fox(l, v[N].size()){
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 2 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 4 |
Incorrect |
159 ms |
13892 KB |
Output isn't correct |
| 5 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 6 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 7 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 9 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 10 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 11 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 12 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 13 |
Incorrect |
146 ms |
13100 KB |
Output isn't correct |
| 14 |
Incorrect |
163 ms |
13628 KB |
Output isn't correct |
| 15 |
Incorrect |
179 ms |
13892 KB |
Output isn't correct |
| 16 |
Incorrect |
126 ms |
13232 KB |
Output isn't correct |
| 17 |
Incorrect |
169 ms |
13892 KB |
Output isn't correct |
| 18 |
Incorrect |
143 ms |
13892 KB |
Output isn't correct |
| 19 |
Incorrect |
163 ms |
13100 KB |
Output isn't correct |
| 20 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 21 |
Incorrect |
3 ms |
9932 KB |
Output isn't correct |
| 22 |
Incorrect |
169 ms |
13892 KB |
Output isn't correct |
| 23 |
Incorrect |
133 ms |
13100 KB |
Output isn't correct |
| 24 |
Incorrect |
189 ms |
13892 KB |
Output isn't correct |
| 25 |
Incorrect |
129 ms |
13236 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 2 |
Incorrect |
3 ms |
9932 KB |
Output isn't correct |
| 3 |
Correct |
186 ms |
17960 KB |
Output is correct |
| 4 |
Incorrect |
216 ms |
21276 KB |
Output isn't correct |
| 5 |
Incorrect |
219 ms |
13688 KB |
Output isn't correct |
| 6 |
Correct |
679 ms |
23792 KB |
Output is correct |
| 7 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
9932 KB |
Output is correct |
| 10 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 11 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 12 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 13 |
Correct |
0 ms |
9932 KB |
Output is correct |
| 14 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 15 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 16 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 17 |
Correct |
0 ms |
9932 KB |
Output is correct |
| 18 |
Incorrect |
3 ms |
9932 KB |
Output isn't correct |
| 19 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 20 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 21 |
Correct |
0 ms |
10064 KB |
Output is correct |
| 22 |
Incorrect |
0 ms |
9932 KB |
Output isn't correct |
| 23 |
Incorrect |
146 ms |
18048 KB |
Output isn't correct |
| 24 |
Incorrect |
223 ms |
18804 KB |
Output isn't correct |
| 25 |
Correct |
126 ms |
17968 KB |
Output is correct |
| 26 |
Incorrect |
156 ms |
19228 KB |
Output isn't correct |
| 27 |
Incorrect |
139 ms |
20960 KB |
Output isn't correct |
| 28 |
Incorrect |
216 ms |
13764 KB |
Output isn't correct |
| 29 |
Correct |
493 ms |
21152 KB |
Output is correct |
| 30 |
Incorrect |
153 ms |
17736 KB |
Output isn't correct |
| 31 |
Incorrect |
173 ms |
22292 KB |
Output isn't correct |
| 32 |
Incorrect |
159 ms |
15564 KB |
Output isn't correct |
| 33 |
Correct |
149 ms |
19008 KB |
Output is correct |
| 34 |
Incorrect |
159 ms |
19056 KB |
Output isn't correct |
| 35 |
Incorrect |
179 ms |
21276 KB |
Output isn't correct |
| 36 |
Incorrect |
183 ms |
13628 KB |
Output isn't correct |
| 37 |
Correct |
633 ms |
23792 KB |
Output is correct |
| 38 |
Incorrect |
153 ms |
18032 KB |
Output isn't correct |
| 39 |
Incorrect |
156 ms |
14760 KB |
Output isn't correct |
| 40 |
Incorrect |
149 ms |
18372 KB |
Output isn't correct |
| 41 |
Correct |
156 ms |
22296 KB |
Output is correct |
| 42 |
Incorrect |
176 ms |
19456 KB |
Output isn't correct |
| 43 |
Incorrect |
169 ms |
21768 KB |
Output isn't correct |
| 44 |
Incorrect |
159 ms |
13692 KB |
Output isn't correct |
| 45 |
Correct |
456 ms |
22208 KB |
Output is correct |
| 46 |
Incorrect |
149 ms |
17352 KB |
Output isn't correct |
| 47 |
Incorrect |
139 ms |
18508 KB |
Output isn't correct |
| 48 |
Incorrect |
176 ms |
22032 KB |
Output isn't correct |
| 49 |
Correct |
146 ms |
14932 KB |
Output is correct |
| 50 |
Incorrect |
173 ms |
19112 KB |
Output isn't correct |
| 51 |
Incorrect |
186 ms |
17804 KB |
Output isn't correct |
| 52 |
Incorrect |
173 ms |
15764 KB |
Output isn't correct |
| 53 |
Correct |
499 ms |
21944 KB |
Output is correct |
| 54 |
Incorrect |
186 ms |
17160 KB |
Output isn't correct |
