#include <bits/stdc++.h>
#pragma GCC optimize("O2")
using namespace std;
const int dydis = 2e5 + 1;
int n, r, q;
vector<int> dideli; // regionai
vector<int> regs[dydis];
int tevas[dydis];
vector<int> gr[dydis];
map<pair<int, int>, long long > rem;
int sm[dydis];
int val[dydis];
int kam[dydis];
int sq;
int dbInd = 0;
int kelint[dydis];
int enter[dydis], leave[dydis];
long long dideliuMem1[450][20001], dideliuMem2[450][20001];
void dfs1(int v, int came){
enter[v] = dbInd++;
for(auto x : gr[v]){
if(x == came) continue;
dfs1(x, v);
}
leave[v] = dbInd;
}
bool isAnc(int a, int b){
return enter[a] <= enter[b] && leave[b] <= leave[a];
}
int kek = 0;
int prm = 0;
void dfs(int v){
// cout << "v = " << v << endl;
sm[v] = val[v];
for(auto x : gr[v]){
if(x == tevas[v]) continue;
kek += val[v];
dfs(x);
kek -= val[v];
sm[v] += sm[x];
}
if(!val[v]){
// cout << "rem[" << prm+1 << "][" << v+1 << "(" << kam[v]+1 << ")] += " << kek << "\n";
// cout << "rem[" << v+1 << "(" << kam[v]+1 << ")][" << prm+1 << "] += " << sm[v] << "\n"
dideliuMem1[prm][kam[v]] += kek;
dideliuMem2[prm][kam[v]] += sm[v];
}
}
int dbIndd = 0;
void calc(int ind){
kelint[ind] = dbIndd++;
// cout << "nuo " << ind+1 << endl;
for(int i = 0; i < n; i++) sm[i] = val[i] = 0;
for(auto x : regs[ind]){
val[x] = 1;
}
kek = 0;
prm = ind;
dfs(0);
}
long long f(int a, int b){
if((int)regs[a].size() >= sq){
int sk = kelint[a];
return dideliuMem1[sk][b];
}
if((int)regs[b].size() >= sq){
int sk = kelint[b];
return dideliuMem2[sk][a];
}
if(rem.count({a, b})) {
return rem[{a, b}] ;
}
long long ret = 0;
for(auto x : regs[a]){
for(auto y : regs[b]){
ret += isAnc(x, y);
}
}
return rem[{a, b}] = ret;
}
int main(){
cin.tie(NULL);
ios_base::sync_with_stdio(false);
cin >> n >> r >> q;
for(int i = 0; i < n; i++){
int par = -1, reg;
if(i == 0) cin >> reg;
else cin >> par >> reg;
par--; reg--;
regs[reg].push_back(i);
if(par != -2){
gr[i].push_back(par);
gr[par].push_back(i);
}
tevas[i] = par;
kam[i] = reg;
}
dfs1(0, -1);
sq = sqrt(n);
for(int i = 0; i < r; i++){
if((int)regs[i].size() >= sq){
calc(i);
dideli.push_back(i);
}
}
while(q--){
int a, b; cin >> a >> b; a--; b--;
cout << f(a, b) << endl;
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
9672 KB |
Output is correct |
2 |
Incorrect |
6 ms |
9736 KB |
Output isn't correct |
3 |
Correct |
8 ms |
9736 KB |
Output is correct |
4 |
Correct |
12 ms |
9748 KB |
Output is correct |
5 |
Correct |
17 ms |
9768 KB |
Output is correct |
6 |
Correct |
26 ms |
9848 KB |
Output is correct |
7 |
Correct |
43 ms |
9912 KB |
Output is correct |
8 |
Correct |
55 ms |
10004 KB |
Output is correct |
9 |
Correct |
57 ms |
10416 KB |
Output is correct |
10 |
Correct |
110 ms |
10684 KB |
Output is correct |
11 |
Correct |
242 ms |
11004 KB |
Output is correct |
12 |
Correct |
197 ms |
11628 KB |
Output is correct |
13 |
Correct |
379 ms |
11760 KB |
Output is correct |
14 |
Incorrect |
999 ms |
12676 KB |
Output isn't correct |
15 |
Incorrect |
826 ms |
15812 KB |
Output isn't correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
3384 ms |
16868 KB |
Output isn't correct |
2 |
Incorrect |
5402 ms |
16504 KB |
Output isn't correct |
3 |
Execution timed out |
8045 ms |
21136 KB |
Time limit exceeded |
4 |
Correct |
473 ms |
12992 KB |
Output is correct |
5 |
Correct |
570 ms |
15016 KB |
Output is correct |
6 |
Runtime error |
52 ms |
27056 KB |
Execution killed with signal 11 |
7 |
Runtime error |
85 ms |
30728 KB |
Execution killed with signal 11 |
8 |
Runtime error |
106 ms |
43516 KB |
Execution killed with signal 11 |
9 |
Correct |
6960 ms |
27180 KB |
Output is correct |
10 |
Runtime error |
114 ms |
53472 KB |
Execution killed with signal 11 |
11 |
Execution timed out |
8050 ms |
24220 KB |
Time limit exceeded |
12 |
Runtime error |
133 ms |
43396 KB |
Execution killed with signal 11 |
13 |
Runtime error |
119 ms |
44872 KB |
Execution killed with signal 11 |
14 |
Runtime error |
187 ms |
46880 KB |
Execution killed with signal 11 |
15 |
Runtime error |
133 ms |
51440 KB |
Execution killed with signal 11 |
16 |
Runtime error |
152 ms |
68640 KB |
Execution killed with signal 11 |
17 |
Runtime error |
155 ms |
66824 KB |
Execution killed with signal 11 |