#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
vector< pii > g[150001];
int dp[150001][2][31];
int last[150001][2][31];
int mx[150001][2][31];
pii need[150001][2];
void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
for (int i = 0; i < M; ++i) {
g[R[i][0]].push_back(make_pair(R[i][1], i));
g[R[i][1]].push_back(make_pair(R[i][0], i));
}
memset(dp, -1, sizeof dp);
memset(need,-1,sizeof need);
for (int i = 0 ; i < N ; i++) {
if (g[i].size()) {
dp[i][0][0] = dp[i][1][0] = g[i][0].first;
last[i][0][0] = last[i][1][0] = g[i][0].second;
if (g[i][0].first == P) {
mx[i][0][0] = 1;
}
}
if (g[i].size() > 1) {
dp[i][1][0] = g[i][1].first;
last[i][1][0] = g[i][1].second;
if (g[i][1].first == P) {
mx[i][1][0] = 1;
}
}
}
for (int k = 1 ; k <= 30; k++)
for (int i = 0 ; i < N ; i++) {
for (int it = 0 ; it < 2 ; it++) {
if (dp[i][it][k - 1] != -1) {
int vv = dp[i][it][k - 1];
int uu = last[i][it][k - 1];
dp[i][it][k] = dp[vv][(g[vv][0].second == uu)][k - 1];
last[i][it][k] = last[vv][(g[vv][0].second == uu)][k - 1];
mx[i][it][k] = max(mx[i][it][k - 1], mx[vv][(g[vv][0].second == uu)][k - 1]);
}
}
}
for (int i = 0 ; i < N ; i++) {
for (int it = 0 ; it < 2 ; it++) {
int go = i;
int ll = !it?-1:g[i][0].second;
int t = 0;
for (int k = 30 ; k >= 0 ; k--) {
if (mx[go][ll == g[go][0].second][k] == 0) {
t += (1 << k);
int nw = dp[go][ll == g[go][0].second][k];
ll = last[go][ll == g[go][0].second][k];
go = nw;
}
}
if(dp[go][ll == g[go][0].second][0] == P){
bool equal = last[go][ll == g[go][0].second][0] == g[P][0].second;
need[i][it] = make_pair(t+1,equal);
}
}
}
for (int i = 0 ; i < Q ; i++) {
int cnt = 0;
for (int j = 0 ; j < N ; j++) {
if(need[j][0].first == -1)
continue;
if(G[i] < need[j][0].first)
continue;
int rem = G[i] - need[j][0].first;
int curIt = need[j][0].second;
for(int it = 0 ; it < 2 ; it++){
if(need[P][curIt].first == -1)
break;
if(rem >= need[P][curIt].first){
rem -= need[P][curIt].first;
curIt = need[P][curIt].second;
}
}
if (need[P][curIt].first != -1 && rem%need[P][curIt].first == 0){
cnt++;
}
}
answer(cnt);
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
40 ms |
43076 KB |
Output is correct |
2 |
Correct |
40 ms |
43064 KB |
Output is correct |
3 |
Correct |
41 ms |
43124 KB |
Output is correct |
4 |
Correct |
39 ms |
42656 KB |
Output is correct |
5 |
Correct |
40 ms |
42588 KB |
Output is correct |
6 |
Correct |
40 ms |
43128 KB |
Output is correct |
7 |
Correct |
39 ms |
42744 KB |
Output is correct |
8 |
Correct |
42 ms |
43100 KB |
Output is correct |
9 |
Correct |
44 ms |
43328 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
40 ms |
43076 KB |
Output is correct |
2 |
Correct |
40 ms |
43064 KB |
Output is correct |
3 |
Correct |
41 ms |
43124 KB |
Output is correct |
4 |
Correct |
39 ms |
42656 KB |
Output is correct |
5 |
Correct |
40 ms |
42588 KB |
Output is correct |
6 |
Correct |
40 ms |
43128 KB |
Output is correct |
7 |
Correct |
39 ms |
42744 KB |
Output is correct |
8 |
Correct |
42 ms |
43100 KB |
Output is correct |
9 |
Correct |
44 ms |
43328 KB |
Output is correct |
10 |
Correct |
39 ms |
42644 KB |
Output is correct |
11 |
Correct |
196 ms |
54576 KB |
Output is correct |
12 |
Correct |
390 ms |
63140 KB |
Output is correct |
13 |
Incorrect |
628 ms |
87360 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
40 ms |
43076 KB |
Output is correct |
2 |
Correct |
40 ms |
43064 KB |
Output is correct |
3 |
Correct |
41 ms |
43124 KB |
Output is correct |
4 |
Correct |
39 ms |
42656 KB |
Output is correct |
5 |
Correct |
40 ms |
42588 KB |
Output is correct |
6 |
Correct |
40 ms |
43128 KB |
Output is correct |
7 |
Correct |
39 ms |
42744 KB |
Output is correct |
8 |
Correct |
42 ms |
43100 KB |
Output is correct |
9 |
Correct |
44 ms |
43328 KB |
Output is correct |
10 |
Correct |
39 ms |
42644 KB |
Output is correct |
11 |
Correct |
196 ms |
54576 KB |
Output is correct |
12 |
Correct |
390 ms |
63140 KB |
Output is correct |
13 |
Incorrect |
628 ms |
87360 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |