#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
typedef vector<pair<int,int>> vii;
const int maxn = 1e5 + 20;
const int sq = 320;
vector<int> in[maxn];
vii path[maxn];
int dp[maxn] , mx[maxn] , all[maxn];
bool is[maxn];
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n , m , q;
cin >> n >> m >> q;
for(int i = 0; i < m; i++)
{
int a , b;
cin >> a >> b;
a-- , b--;
in[b].pb(a);
}
memset(mx , -1 , sizeof mx);
for(int v = 0; v < n; v++)
{
int t = 0;
all[t++] = v , mx[v] = 0;
for(auto u : in[v])
for(auto w : path[u])
{
mx[w.second] = max(mx[w.second] , w.first + 1);
all[t++] = w.second;
}
for(int i = 0; i < t; i++)
if(mx[all[i]] != -1)
path[v].pb({mx[all[i]] , all[i]}) , mx[all[i]] = -1;
sort(path[v].begin() , path[v].end());
reverse(path[v].begin() , path[v].end());
while(path[v].size() > sq)
path[v].pop_back();
}
while(q--)
{
int v , sz;
cin >> v >> sz;
v--;
vector<int> tmp;
for(int _ = 0; _ < sz; _++)
{
int x;
cin >> x;
x--;
tmp.pb(x);
is[x] = 1;
}
if(sz >= sq)
{
for(int i = 0; i <= v; i++)
{
dp[i] = -1e9;
if(!is[i])
dp[i] = 0;
for(auto u : in[i])
dp[i] = max(dp[i] , dp[u] + 1);
}
dp[v] = max(dp[v] , -1);
cout << dp[v] << endl;
}
else
{
bool f = 0;
for(auto x : path[v])
if(!is[x.second])
{
cout << x.first << endl;
f = 1;
break;
}
if(!f)
cout << -1 << endl;
}
for(auto x : tmp)
is[x] = 0;
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
5496 KB |
Output is correct |
2 |
Correct |
6 ms |
5496 KB |
Output is correct |
3 |
Correct |
6 ms |
5496 KB |
Output is correct |
4 |
Correct |
6 ms |
5496 KB |
Output is correct |
5 |
Correct |
9 ms |
5880 KB |
Output is correct |
6 |
Correct |
9 ms |
5880 KB |
Output is correct |
7 |
Correct |
9 ms |
5880 KB |
Output is correct |
8 |
Correct |
17 ms |
8824 KB |
Output is correct |
9 |
Correct |
17 ms |
8744 KB |
Output is correct |
10 |
Correct |
17 ms |
8824 KB |
Output is correct |
11 |
Correct |
17 ms |
8440 KB |
Output is correct |
12 |
Correct |
13 ms |
6776 KB |
Output is correct |
13 |
Correct |
17 ms |
8184 KB |
Output is correct |
14 |
Correct |
16 ms |
7416 KB |
Output is correct |
15 |
Correct |
13 ms |
6520 KB |
Output is correct |
16 |
Correct |
15 ms |
7416 KB |
Output is correct |
17 |
Correct |
17 ms |
7656 KB |
Output is correct |
18 |
Correct |
13 ms |
6648 KB |
Output is correct |
19 |
Correct |
17 ms |
7672 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
5496 KB |
Output is correct |
2 |
Correct |
6 ms |
5496 KB |
Output is correct |
3 |
Correct |
6 ms |
5496 KB |
Output is correct |
4 |
Correct |
6 ms |
5496 KB |
Output is correct |
5 |
Correct |
9 ms |
5880 KB |
Output is correct |
6 |
Correct |
9 ms |
5880 KB |
Output is correct |
7 |
Correct |
9 ms |
5880 KB |
Output is correct |
8 |
Correct |
17 ms |
8824 KB |
Output is correct |
9 |
Correct |
17 ms |
8744 KB |
Output is correct |
10 |
Correct |
17 ms |
8824 KB |
Output is correct |
11 |
Correct |
17 ms |
8440 KB |
Output is correct |
12 |
Correct |
13 ms |
6776 KB |
Output is correct |
13 |
Correct |
17 ms |
8184 KB |
Output is correct |
14 |
Correct |
16 ms |
7416 KB |
Output is correct |
15 |
Correct |
13 ms |
6520 KB |
Output is correct |
16 |
Correct |
15 ms |
7416 KB |
Output is correct |
17 |
Correct |
17 ms |
7656 KB |
Output is correct |
18 |
Correct |
13 ms |
6648 KB |
Output is correct |
19 |
Correct |
17 ms |
7672 KB |
Output is correct |
20 |
Correct |
139 ms |
10228 KB |
Output is correct |
21 |
Correct |
142 ms |
10340 KB |
Output is correct |
22 |
Correct |
147 ms |
10160 KB |
Output is correct |
23 |
Correct |
166 ms |
10232 KB |
Output is correct |
24 |
Correct |
1781 ms |
263356 KB |
Output is correct |
25 |
Correct |
1936 ms |
272076 KB |
Output is correct |
26 |
Correct |
1693 ms |
270012 KB |
Output is correct |
27 |
Correct |
1220 ms |
411072 KB |
Output is correct |
28 |
Correct |
1197 ms |
411132 KB |
Output is correct |
29 |
Correct |
1341 ms |
411400 KB |
Output is correct |
30 |
Correct |
1313 ms |
410528 KB |
Output is correct |
31 |
Correct |
1837 ms |
402120 KB |
Output is correct |
32 |
Correct |
1357 ms |
410420 KB |
Output is correct |
33 |
Correct |
1225 ms |
252904 KB |
Output is correct |
34 |
Correct |
1602 ms |
278792 KB |
Output is correct |
35 |
Correct |
1258 ms |
251376 KB |
Output is correct |
36 |
Correct |
1414 ms |
331964 KB |
Output is correct |
37 |
Correct |
1855 ms |
308336 KB |
Output is correct |
38 |
Correct |
1382 ms |
332800 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
5496 KB |
Output is correct |
2 |
Correct |
6 ms |
5496 KB |
Output is correct |
3 |
Correct |
6 ms |
5496 KB |
Output is correct |
4 |
Correct |
6 ms |
5496 KB |
Output is correct |
5 |
Correct |
9 ms |
5880 KB |
Output is correct |
6 |
Correct |
9 ms |
5880 KB |
Output is correct |
7 |
Correct |
9 ms |
5880 KB |
Output is correct |
8 |
Correct |
17 ms |
8824 KB |
Output is correct |
9 |
Correct |
17 ms |
8744 KB |
Output is correct |
10 |
Correct |
17 ms |
8824 KB |
Output is correct |
11 |
Correct |
17 ms |
8440 KB |
Output is correct |
12 |
Correct |
13 ms |
6776 KB |
Output is correct |
13 |
Correct |
17 ms |
8184 KB |
Output is correct |
14 |
Correct |
16 ms |
7416 KB |
Output is correct |
15 |
Correct |
13 ms |
6520 KB |
Output is correct |
16 |
Correct |
15 ms |
7416 KB |
Output is correct |
17 |
Correct |
17 ms |
7656 KB |
Output is correct |
18 |
Correct |
13 ms |
6648 KB |
Output is correct |
19 |
Correct |
17 ms |
7672 KB |
Output is correct |
20 |
Correct |
139 ms |
10228 KB |
Output is correct |
21 |
Correct |
142 ms |
10340 KB |
Output is correct |
22 |
Correct |
147 ms |
10160 KB |
Output is correct |
23 |
Correct |
166 ms |
10232 KB |
Output is correct |
24 |
Correct |
1781 ms |
263356 KB |
Output is correct |
25 |
Correct |
1936 ms |
272076 KB |
Output is correct |
26 |
Correct |
1693 ms |
270012 KB |
Output is correct |
27 |
Correct |
1220 ms |
411072 KB |
Output is correct |
28 |
Correct |
1197 ms |
411132 KB |
Output is correct |
29 |
Correct |
1341 ms |
411400 KB |
Output is correct |
30 |
Correct |
1313 ms |
410528 KB |
Output is correct |
31 |
Correct |
1837 ms |
402120 KB |
Output is correct |
32 |
Correct |
1357 ms |
410420 KB |
Output is correct |
33 |
Correct |
1225 ms |
252904 KB |
Output is correct |
34 |
Correct |
1602 ms |
278792 KB |
Output is correct |
35 |
Correct |
1258 ms |
251376 KB |
Output is correct |
36 |
Correct |
1414 ms |
331964 KB |
Output is correct |
37 |
Correct |
1855 ms |
308336 KB |
Output is correct |
38 |
Correct |
1382 ms |
332800 KB |
Output is correct |
39 |
Correct |
1913 ms |
267080 KB |
Output is correct |
40 |
Correct |
1889 ms |
267056 KB |
Output is correct |
41 |
Correct |
1831 ms |
268124 KB |
Output is correct |
42 |
Correct |
1952 ms |
267368 KB |
Output is correct |
43 |
Correct |
1962 ms |
268220 KB |
Output is correct |
44 |
Correct |
315 ms |
10616 KB |
Output is correct |
45 |
Correct |
173 ms |
10444 KB |
Output is correct |
46 |
Correct |
151 ms |
10256 KB |
Output is correct |
47 |
Correct |
163 ms |
10260 KB |
Output is correct |
48 |
Correct |
155 ms |
10160 KB |
Output is correct |
49 |
Correct |
1662 ms |
411084 KB |
Output is correct |
50 |
Correct |
1425 ms |
410944 KB |
Output is correct |
51 |
Correct |
300 ms |
11172 KB |
Output is correct |
52 |
Correct |
154 ms |
10620 KB |
Output is correct |
53 |
Correct |
1651 ms |
330828 KB |
Output is correct |
54 |
Execution timed out |
2043 ms |
310748 KB |
Time limit exceeded |
55 |
Halted |
0 ms |
0 KB |
- |