#include <bits/stdc++.h>
#define D 103
#define maxN 100005
using namespace std;
vector <int> adj[maxN],u;
vector <pair<int,int>> d[maxN];
bool mar[maxN];
int n,m,q,i,j,x,y,t,ans,dp[maxN];
vector<pair<int,int>> dodaj(vector <pair<int,int>> a,vector <pair<int,int>> b){
vector<pair<int,int>> v;
int i,j;
i=j=0;
while(i<a.size() && j<b.size()){
if(a[i].first>=b[j].first+1) {v.push_back(a[i]); i++;}
else {v.push_back({b[j].first+1,b[j].second}); j++;}
}
while(i<a.size()){
v.push_back(a[i]); i++;
}
while(j<b.size()){
v.push_back({b[j].first+1,b[j].second}); j++;
}
vector<pair<int,int>> u;
for(i=0;i<v.size();i++){
if(!mar[v[i].second]){u.push_back(v[i]); mar[v[i].second]=true;}
}
for(i=0;i<u.size();i++) mar[u[i].second]=false;
while(u.size()>=D) u.pop_back();
return u;
}
int main()
{
srand(time(NULL));
std::ios_base::sync_with_stdio(0);
cin>>n>>m>>q;
for(i=0;i<m;i++){
cin>>x>>y;
adj[y].push_back(x);
}
for(i=1;i<=n;i++){
d[i].push_back({0,i});
for(j=0;j<adj[i].size();j++){
d[i]=dodaj(d[i],d[adj[i][j]]);
}
}
while(q--){
cin>>t>>x;
u.clear();
for(i=0;i<x;i++){
cin>>y;
mar[y]=true;
u.push_back(y);
}
ans=-1;
for(i=0;i<d[t].size();i++){
if(!mar[d[t][i].second]){
ans=d[t][i].first;
break;
}
}
if(x>=D-2 && ans==-1)
{
for(i=1;i<=t;i++){
dp[i]=-1;
if(!mar[i]) dp[i]=0;
for(j=0;j<adj[i].size();j++){
if(dp[adj[i][j]]!=-1) dp[i]=max(dp[i],dp[adj[i][j]]+1);
}
}
ans=dp[t];
}
for(i=0;i<u.size();i++) mar[u[i]]=false;
cout<<ans<<"\n";
}
return 0;
}
Compilation message
bitaro.cpp: In function 'std::vector<std::pair<int, int> > dodaj(std::vector<std::pair<int, int> >, std::vector<std::pair<int, int> >)':
bitaro.cpp:16:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(i<a.size() && j<b.size()){
~^~~~~~~~~
bitaro.cpp:16:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(i<a.size() && j<b.size()){
~^~~~~~~~~
bitaro.cpp:20:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(i<a.size()){
~^~~~~~~~~
bitaro.cpp:23:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(j<b.size()){
~^~~~~~~~~
bitaro.cpp:27:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(i=0;i<v.size();i++){
~^~~~~~~~~
bitaro.cpp:30:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(i=0;i<u.size();i++) mar[u[i].second]=false;
~^~~~~~~~~
bitaro.cpp: In function 'int main()':
bitaro.cpp:46:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(j=0;j<adj[i].size();j++){
~^~~~~~~~~~~~~~
bitaro.cpp:59:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(i=0;i<d[t].size();i++){
~^~~~~~~~~~~~
bitaro.cpp:70:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(j=0;j<adj[i].size();j++){
~^~~~~~~~~~~~~~
bitaro.cpp:76:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(i=0;i<u.size();i++) mar[u[i]]=false;
~^~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
7 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
4992 KB |
Output is correct |
3 |
Correct |
7 ms |
5120 KB |
Output is correct |
4 |
Correct |
6 ms |
4992 KB |
Output is correct |
5 |
Correct |
12 ms |
5504 KB |
Output is correct |
6 |
Correct |
12 ms |
5504 KB |
Output is correct |
7 |
Correct |
12 ms |
5504 KB |
Output is correct |
8 |
Correct |
15 ms |
6144 KB |
Output is correct |
9 |
Correct |
16 ms |
6144 KB |
Output is correct |
10 |
Correct |
14 ms |
6016 KB |
Output is correct |
11 |
Correct |
15 ms |
6016 KB |
Output is correct |
12 |
Correct |
12 ms |
5888 KB |
Output is correct |
13 |
Correct |
14 ms |
6016 KB |
Output is correct |
14 |
Correct |
13 ms |
5760 KB |
Output is correct |
15 |
Correct |
11 ms |
5504 KB |
Output is correct |
16 |
Correct |
12 ms |
5760 KB |
Output is correct |
17 |
Correct |
12 ms |
5760 KB |
Output is correct |
18 |
Correct |
13 ms |
5636 KB |
Output is correct |
19 |
Correct |
13 ms |
5888 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
7 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
4992 KB |
Output is correct |
3 |
Correct |
7 ms |
5120 KB |
Output is correct |
4 |
Correct |
6 ms |
4992 KB |
Output is correct |
5 |
Correct |
12 ms |
5504 KB |
Output is correct |
6 |
Correct |
12 ms |
5504 KB |
Output is correct |
7 |
Correct |
12 ms |
5504 KB |
Output is correct |
8 |
Correct |
15 ms |
6144 KB |
Output is correct |
9 |
Correct |
16 ms |
6144 KB |
Output is correct |
10 |
Correct |
14 ms |
6016 KB |
Output is correct |
11 |
Correct |
15 ms |
6016 KB |
Output is correct |
12 |
Correct |
12 ms |
5888 KB |
Output is correct |
13 |
Correct |
14 ms |
6016 KB |
Output is correct |
14 |
Correct |
13 ms |
5760 KB |
Output is correct |
15 |
Correct |
11 ms |
5504 KB |
Output is correct |
16 |
Correct |
12 ms |
5760 KB |
Output is correct |
17 |
Correct |
12 ms |
5760 KB |
Output is correct |
18 |
Correct |
13 ms |
5636 KB |
Output is correct |
19 |
Correct |
13 ms |
5888 KB |
Output is correct |
20 |
Correct |
753 ms |
7424 KB |
Output is correct |
21 |
Correct |
666 ms |
7288 KB |
Output is correct |
22 |
Correct |
702 ms |
7208 KB |
Output is correct |
23 |
Correct |
752 ms |
7288 KB |
Output is correct |
24 |
Correct |
1277 ms |
105228 KB |
Output is correct |
25 |
Correct |
1155 ms |
98012 KB |
Output is correct |
26 |
Correct |
1249 ms |
97576 KB |
Output is correct |
27 |
Correct |
1088 ms |
110712 KB |
Output is correct |
28 |
Correct |
931 ms |
110564 KB |
Output is correct |
29 |
Correct |
957 ms |
110836 KB |
Output is correct |
30 |
Correct |
1022 ms |
110580 KB |
Output is correct |
31 |
Correct |
1236 ms |
130860 KB |
Output is correct |
32 |
Correct |
1080 ms |
110516 KB |
Output is correct |
33 |
Correct |
920 ms |
73592 KB |
Output is correct |
34 |
Correct |
996 ms |
86664 KB |
Output is correct |
35 |
Correct |
921 ms |
73280 KB |
Output is correct |
36 |
Correct |
824 ms |
91144 KB |
Output is correct |
37 |
Correct |
1180 ms |
109160 KB |
Output is correct |
38 |
Correct |
851 ms |
91504 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
7 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
4992 KB |
Output is correct |
3 |
Correct |
7 ms |
5120 KB |
Output is correct |
4 |
Correct |
6 ms |
4992 KB |
Output is correct |
5 |
Correct |
12 ms |
5504 KB |
Output is correct |
6 |
Correct |
12 ms |
5504 KB |
Output is correct |
7 |
Correct |
12 ms |
5504 KB |
Output is correct |
8 |
Correct |
15 ms |
6144 KB |
Output is correct |
9 |
Correct |
16 ms |
6144 KB |
Output is correct |
10 |
Correct |
14 ms |
6016 KB |
Output is correct |
11 |
Correct |
15 ms |
6016 KB |
Output is correct |
12 |
Correct |
12 ms |
5888 KB |
Output is correct |
13 |
Correct |
14 ms |
6016 KB |
Output is correct |
14 |
Correct |
13 ms |
5760 KB |
Output is correct |
15 |
Correct |
11 ms |
5504 KB |
Output is correct |
16 |
Correct |
12 ms |
5760 KB |
Output is correct |
17 |
Correct |
12 ms |
5760 KB |
Output is correct |
18 |
Correct |
13 ms |
5636 KB |
Output is correct |
19 |
Correct |
13 ms |
5888 KB |
Output is correct |
20 |
Correct |
753 ms |
7424 KB |
Output is correct |
21 |
Correct |
666 ms |
7288 KB |
Output is correct |
22 |
Correct |
702 ms |
7208 KB |
Output is correct |
23 |
Correct |
752 ms |
7288 KB |
Output is correct |
24 |
Correct |
1277 ms |
105228 KB |
Output is correct |
25 |
Correct |
1155 ms |
98012 KB |
Output is correct |
26 |
Correct |
1249 ms |
97576 KB |
Output is correct |
27 |
Correct |
1088 ms |
110712 KB |
Output is correct |
28 |
Correct |
931 ms |
110564 KB |
Output is correct |
29 |
Correct |
957 ms |
110836 KB |
Output is correct |
30 |
Correct |
1022 ms |
110580 KB |
Output is correct |
31 |
Correct |
1236 ms |
130860 KB |
Output is correct |
32 |
Correct |
1080 ms |
110516 KB |
Output is correct |
33 |
Correct |
920 ms |
73592 KB |
Output is correct |
34 |
Correct |
996 ms |
86664 KB |
Output is correct |
35 |
Correct |
921 ms |
73280 KB |
Output is correct |
36 |
Correct |
824 ms |
91144 KB |
Output is correct |
37 |
Correct |
1180 ms |
109160 KB |
Output is correct |
38 |
Correct |
851 ms |
91504 KB |
Output is correct |
39 |
Correct |
1522 ms |
105836 KB |
Output is correct |
40 |
Correct |
1272 ms |
98708 KB |
Output is correct |
41 |
Correct |
1260 ms |
102524 KB |
Output is correct |
42 |
Correct |
1328 ms |
103180 KB |
Output is correct |
43 |
Correct |
1255 ms |
107144 KB |
Output is correct |
44 |
Correct |
903 ms |
10064 KB |
Output is correct |
45 |
Correct |
815 ms |
9124 KB |
Output is correct |
46 |
Correct |
775 ms |
9056 KB |
Output is correct |
47 |
Correct |
804 ms |
8916 KB |
Output is correct |
48 |
Correct |
814 ms |
8696 KB |
Output is correct |
49 |
Correct |
1309 ms |
114152 KB |
Output is correct |
50 |
Correct |
1561 ms |
113260 KB |
Output is correct |
51 |
Correct |
892 ms |
9940 KB |
Output is correct |
52 |
Correct |
880 ms |
9048 KB |
Output is correct |
53 |
Correct |
1092 ms |
94364 KB |
Output is correct |
54 |
Correct |
1424 ms |
111224 KB |
Output is correct |
55 |
Correct |
1046 ms |
93732 KB |
Output is correct |
56 |
Correct |
1256 ms |
117132 KB |
Output is correct |
57 |
Correct |
788 ms |
10028 KB |
Output is correct |
58 |
Correct |
846 ms |
10220 KB |
Output is correct |
59 |
Correct |
926 ms |
9140 KB |
Output is correct |
60 |
Correct |
1043 ms |
9184 KB |
Output is correct |
61 |
Correct |
1000 ms |
113352 KB |
Output is correct |
62 |
Correct |
901 ms |
94072 KB |
Output is correct |
63 |
Correct |
1249 ms |
109868 KB |
Output is correct |
64 |
Correct |
1146 ms |
113400 KB |
Output is correct |
65 |
Correct |
1000 ms |
93804 KB |
Output is correct |
66 |
Correct |
1119 ms |
108168 KB |
Output is correct |
67 |
Correct |
1458 ms |
113400 KB |
Output is correct |
68 |
Correct |
1103 ms |
94108 KB |
Output is correct |
69 |
Correct |
1158 ms |
108756 KB |
Output is correct |
70 |
Correct |
806 ms |
113400 KB |
Output is correct |
71 |
Correct |
817 ms |
94072 KB |
Output is correct |
72 |
Correct |
1104 ms |
114328 KB |
Output is correct |
73 |
Correct |
1008 ms |
113272 KB |
Output is correct |
74 |
Correct |
981 ms |
94224 KB |
Output is correct |
75 |
Correct |
1270 ms |
117476 KB |
Output is correct |
76 |
Correct |
1313 ms |
114436 KB |
Output is correct |
77 |
Correct |
1095 ms |
113144 KB |
Output is correct |
78 |
Correct |
895 ms |
113308 KB |
Output is correct |
79 |
Correct |
850 ms |
10188 KB |
Output is correct |
80 |
Correct |
775 ms |
9208 KB |
Output is correct |
81 |
Correct |
753 ms |
8900 KB |
Output is correct |
82 |
Correct |
1306 ms |
114424 KB |
Output is correct |
83 |
Correct |
1263 ms |
134792 KB |
Output is correct |
84 |
Correct |
888 ms |
113120 KB |
Output is correct |
85 |
Correct |
1062 ms |
145140 KB |
Output is correct |
86 |
Correct |
973 ms |
113272 KB |
Output is correct |
87 |
Correct |
1125 ms |
132172 KB |
Output is correct |
88 |
Correct |
956 ms |
10044 KB |
Output is correct |
89 |
Correct |
912 ms |
9988 KB |
Output is correct |
90 |
Correct |
683 ms |
9208 KB |
Output is correct |
91 |
Correct |
636 ms |
9128 KB |
Output is correct |
92 |
Correct |
671 ms |
8648 KB |
Output is correct |
93 |
Correct |
740 ms |
8824 KB |
Output is correct |
94 |
Correct |
1183 ms |
77512 KB |
Output is correct |
95 |
Correct |
1201 ms |
92868 KB |
Output is correct |
96 |
Correct |
783 ms |
76080 KB |
Output is correct |
97 |
Correct |
930 ms |
93424 KB |
Output is correct |
98 |
Correct |
841 ms |
76536 KB |
Output is correct |
99 |
Correct |
942 ms |
91920 KB |
Output is correct |
100 |
Correct |
925 ms |
10028 KB |
Output is correct |
101 |
Correct |
1027 ms |
10044 KB |
Output is correct |
102 |
Correct |
687 ms |
9072 KB |
Output is correct |
103 |
Correct |
799 ms |
9116 KB |
Output is correct |
104 |
Correct |
726 ms |
8804 KB |
Output is correct |
105 |
Correct |
803 ms |
8812 KB |
Output is correct |
106 |
Correct |
1108 ms |
94732 KB |
Output is correct |
107 |
Correct |
1357 ms |
120236 KB |
Output is correct |
108 |
Correct |
993 ms |
93932 KB |
Output is correct |
109 |
Correct |
1350 ms |
106100 KB |
Output is correct |
110 |
Correct |
978 ms |
94196 KB |
Output is correct |
111 |
Correct |
1341 ms |
105748 KB |
Output is correct |
112 |
Correct |
880 ms |
9976 KB |
Output is correct |
113 |
Correct |
841 ms |
10024 KB |
Output is correct |
114 |
Correct |
724 ms |
9140 KB |
Output is correct |
115 |
Correct |
754 ms |
9300 KB |
Output is correct |
116 |
Correct |
772 ms |
8824 KB |
Output is correct |
117 |
Correct |
755 ms |
8824 KB |
Output is correct |
118 |
Correct |
1004 ms |
112904 KB |
Output is correct |
119 |
Correct |
913 ms |
93944 KB |
Output is correct |
120 |
Correct |
1136 ms |
117984 KB |
Output is correct |
121 |
Correct |
1048 ms |
113092 KB |
Output is correct |
122 |
Correct |
921 ms |
93548 KB |
Output is correct |
123 |
Correct |
1155 ms |
116272 KB |
Output is correct |
124 |
Correct |
1073 ms |
112772 KB |
Output is correct |
125 |
Correct |
862 ms |
93984 KB |
Output is correct |
126 |
Correct |
1234 ms |
115164 KB |
Output is correct |