#include <bits/stdc++.h>
#if defined(__GNUC__)
#pragma GCC optimize ("Ofast")
#endif
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<pii, int> piii;
typedef pair<ll, ll> pll;
#define debug(x) cerr<<#x<<'='<<x<<endl;
#define debugp(x) cerr<<#x<<"= {"<<x.first<<", "<<x.second<<"}"<<endl;
#define all(x) x.begin(), x.end()
#define pb push_back
#define kill(x) return cout<<x<<'\n', 0;
#define SZ(x) ((int) x.size())
const ld eps=1e-7;
const int inf=1000000010;
const ll INF=10000000000000010LL;
const int mod = 1000000007;
const int MAXN = 100010, SQ=320;
int n, m, q, u, v, x, y, t, a, b, ans;
vector<pii> good[MAXN];
int dp[MAXN];
vector<int> G[MAXN];
void merg(int a, int b){
vector<pii> tmp;
int sz=min(SQ+1, SZ(good[a])+SZ(good[b]));
for (int i=0, j=0; i+j<sz;){
pii pp={good[b][j].first+1, good[b][j].second};
if (good[a][i]>pp) tmp.pb(good[a][i++]);
else tmp.pb(pp), j++;
}
good[a].clear();
for (pii p:tmp) good[a].pb(p);
}
void bigquery(){
while (y--){
cin>>x;
dp[x]=-inf;
}
for (int i=1; i<=v; i++) for (int j:G[i]) dp[i]=max(dp[i], dp[j]+1);
if (dp[v]<0) dp[v]=-1;
cout<<dp[v]<<'\n';
memset(dp, 0, sizeof(dp));
}
int smallquery(){
set<int> st;
while (y--){
cin>>x;
st.insert(x);
}
for (pii p:good[v]){
if (st.count(p.second)) continue ;
if (p.first<0) kill(-1);
kill(p.first);
}
cout<<"-1\n";
}
void query(){
cin>>v>>y;
if (y>=SQ-10) bigquery();
else smallquery();
}
int main(){
ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
//freopen("input.txt", "r", stdin);
//freopen("output.txt", "w", stdout);
cin>>n>>m>>q;
while (m--){
cin>>u>>v;
G[v].pb(u);
}
for (int i=1; i<=n; i++){
good[i].pb({0, i});
good[i].pb({-inf, 0});
for (int j:G[i]) merg(i, j);
}
//for (int i=1; i<=n; i++) good[i].pop_back();
while (q--) query();
return 0;
}
Compilation message
bitaro.cpp: In function 'int smallquery()':
bitaro.cpp:64:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
5112 KB |
Output is correct |
2 |
Correct |
6 ms |
5112 KB |
Output is correct |
3 |
Correct |
5 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
4984 KB |
Output is correct |
5 |
Correct |
17 ms |
8188 KB |
Output is correct |
6 |
Correct |
16 ms |
8056 KB |
Output is correct |
7 |
Correct |
15 ms |
8056 KB |
Output is correct |
8 |
Correct |
17 ms |
9464 KB |
Output is correct |
9 |
Correct |
19 ms |
9464 KB |
Output is correct |
10 |
Correct |
18 ms |
9464 KB |
Output is correct |
11 |
Correct |
18 ms |
9336 KB |
Output is correct |
12 |
Correct |
16 ms |
8568 KB |
Output is correct |
13 |
Correct |
17 ms |
9336 KB |
Output is correct |
14 |
Correct |
14 ms |
7544 KB |
Output is correct |
15 |
Correct |
13 ms |
6776 KB |
Output is correct |
16 |
Correct |
15 ms |
7600 KB |
Output is correct |
17 |
Correct |
17 ms |
8568 KB |
Output is correct |
18 |
Correct |
14 ms |
7416 KB |
Output is correct |
19 |
Correct |
17 ms |
8568 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
5112 KB |
Output is correct |
2 |
Correct |
6 ms |
5112 KB |
Output is correct |
3 |
Correct |
5 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
4984 KB |
Output is correct |
5 |
Correct |
17 ms |
8188 KB |
Output is correct |
6 |
Correct |
16 ms |
8056 KB |
Output is correct |
7 |
Correct |
15 ms |
8056 KB |
Output is correct |
8 |
Correct |
17 ms |
9464 KB |
Output is correct |
9 |
Correct |
19 ms |
9464 KB |
Output is correct |
10 |
Correct |
18 ms |
9464 KB |
Output is correct |
11 |
Correct |
18 ms |
9336 KB |
Output is correct |
12 |
Correct |
16 ms |
8568 KB |
Output is correct |
13 |
Correct |
17 ms |
9336 KB |
Output is correct |
14 |
Correct |
14 ms |
7544 KB |
Output is correct |
15 |
Correct |
13 ms |
6776 KB |
Output is correct |
16 |
Correct |
15 ms |
7600 KB |
Output is correct |
17 |
Correct |
17 ms |
8568 KB |
Output is correct |
18 |
Correct |
14 ms |
7416 KB |
Output is correct |
19 |
Correct |
17 ms |
8568 KB |
Output is correct |
20 |
Correct |
542 ms |
10852 KB |
Output is correct |
21 |
Correct |
534 ms |
10664 KB |
Output is correct |
22 |
Correct |
540 ms |
10864 KB |
Output is correct |
23 |
Correct |
537 ms |
10616 KB |
Output is correct |
24 |
Correct |
1348 ms |
325352 KB |
Output is correct |
25 |
Correct |
1491 ms |
324848 KB |
Output is correct |
26 |
Correct |
1390 ms |
325484 KB |
Output is correct |
27 |
Correct |
1375 ms |
411000 KB |
Output is correct |
28 |
Correct |
1337 ms |
411000 KB |
Output is correct |
29 |
Correct |
1365 ms |
411040 KB |
Output is correct |
30 |
Correct |
1361 ms |
410936 KB |
Output is correct |
31 |
Correct |
1324 ms |
403396 KB |
Output is correct |
32 |
Correct |
1253 ms |
411000 KB |
Output is correct |
33 |
Correct |
965 ms |
254824 KB |
Output is correct |
34 |
Correct |
891 ms |
217592 KB |
Output is correct |
35 |
Correct |
993 ms |
253300 KB |
Output is correct |
36 |
Correct |
1184 ms |
334664 KB |
Output is correct |
37 |
Correct |
1145 ms |
312840 KB |
Output is correct |
38 |
Correct |
1184 ms |
335224 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
5112 KB |
Output is correct |
2 |
Correct |
6 ms |
5112 KB |
Output is correct |
3 |
Correct |
5 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
4984 KB |
Output is correct |
5 |
Correct |
17 ms |
8188 KB |
Output is correct |
6 |
Correct |
16 ms |
8056 KB |
Output is correct |
7 |
Correct |
15 ms |
8056 KB |
Output is correct |
8 |
Correct |
17 ms |
9464 KB |
Output is correct |
9 |
Correct |
19 ms |
9464 KB |
Output is correct |
10 |
Correct |
18 ms |
9464 KB |
Output is correct |
11 |
Correct |
18 ms |
9336 KB |
Output is correct |
12 |
Correct |
16 ms |
8568 KB |
Output is correct |
13 |
Correct |
17 ms |
9336 KB |
Output is correct |
14 |
Correct |
14 ms |
7544 KB |
Output is correct |
15 |
Correct |
13 ms |
6776 KB |
Output is correct |
16 |
Correct |
15 ms |
7600 KB |
Output is correct |
17 |
Correct |
17 ms |
8568 KB |
Output is correct |
18 |
Correct |
14 ms |
7416 KB |
Output is correct |
19 |
Correct |
17 ms |
8568 KB |
Output is correct |
20 |
Correct |
542 ms |
10852 KB |
Output is correct |
21 |
Correct |
534 ms |
10664 KB |
Output is correct |
22 |
Correct |
540 ms |
10864 KB |
Output is correct |
23 |
Correct |
537 ms |
10616 KB |
Output is correct |
24 |
Correct |
1348 ms |
325352 KB |
Output is correct |
25 |
Correct |
1491 ms |
324848 KB |
Output is correct |
26 |
Correct |
1390 ms |
325484 KB |
Output is correct |
27 |
Correct |
1375 ms |
411000 KB |
Output is correct |
28 |
Correct |
1337 ms |
411000 KB |
Output is correct |
29 |
Correct |
1365 ms |
411040 KB |
Output is correct |
30 |
Correct |
1361 ms |
410936 KB |
Output is correct |
31 |
Correct |
1324 ms |
403396 KB |
Output is correct |
32 |
Correct |
1253 ms |
411000 KB |
Output is correct |
33 |
Correct |
965 ms |
254824 KB |
Output is correct |
34 |
Correct |
891 ms |
217592 KB |
Output is correct |
35 |
Correct |
993 ms |
253300 KB |
Output is correct |
36 |
Correct |
1184 ms |
334664 KB |
Output is correct |
37 |
Correct |
1145 ms |
312840 KB |
Output is correct |
38 |
Correct |
1184 ms |
335224 KB |
Output is correct |
39 |
Correct |
1384 ms |
322076 KB |
Output is correct |
40 |
Correct |
1405 ms |
322680 KB |
Output is correct |
41 |
Correct |
1384 ms |
323192 KB |
Output is correct |
42 |
Correct |
1390 ms |
325368 KB |
Output is correct |
43 |
Correct |
1230 ms |
323164 KB |
Output is correct |
44 |
Incorrect |
574 ms |
10744 KB |
Output isn't correct |
45 |
Halted |
0 ms |
0 KB |
- |