//
// ~oisín~ C++ Template
//
#include <bits/stdc++.h>
#define MX_N 200005
#define mp make_pair
#define mod7 1000000007
#define modpi 314159
#define PI 3.141592653589793238
#define pb push_back
#define FastIO ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define All(a) a.begin(),a.end()
#define fi first
#define se second
#define ll long long int
#define ull unsigned long long int
int kx[8] = {+2, +2, -2, -2, +1, +1, -1, -1};
int ky[8] = {+1, -1, +1, -1, +2, -2, +2, -2};
int d9x[9] = {+1, +1, +1, +0, +0, +0, -1, -1, -1};
int d9y[9] = {+1, +0, -1, +1, +0, -1, +1, +0, -1};
int dx4[4] = {+0, +0, +1, -1};
int dy4[4] = {+1, -1, +0, +0};
ll gcd(ull a, ull b){
return (a==0)?b:gcd(b%a,a);
}
ll lcm(ull a, ull b){
return a*(b/gcd(a,b));
}
const long long INF = 1e18;
using namespace std;
int N, R, Q;
int H[MX_N];
int p[MX_N];
vector<int> adj[MX_N];
vector<int> r[MX_N];
vector<pair<int, bool> > ord;
void dfs(int at){
ord.pb({at, 0});
r[H[at]].pb((int)ord.size()-1);
for(int to : adj[at]){
if(p[at] == to){
continue;
}
dfs(to);
}
ord.pb({at, 1});
r[H[at]].pb((int)ord.size()-1);
}
map<pair<int, int>, int> cache;
//int cache[5000][5000];
int main(){
cin >> N >> R >> Q;
int c = sqrt(N);
// int c = 1000000000;
cin >> H[0];
--H[0];
for(int i=1;i<N;++i){
cin >> p[i] >> H[i];
--p[i], --H[i];
adj[p[i]].pb(i);
}
dfs(0);
for(int j=0;j<R;++j){
if((int)r[j].size() >= c){
for(int i=0;i<R;++i){
if(i == j){
continue;
}
int x = 0, y = 0;
int cur;
if(r[i][0] < r[j][0]){
cur = r[i][0];
++x;
}else{
cur = r[j][0];
++y;
}
int cntA = 0, cntB = 0;
int ans = 0;
while(true){
auto P = ord[cur];
if(H[P.fi] == i){
if(P.se == 0){
++cntA;
}else{
--cntA;
}
}else{
if(P.se == 0){
++cntB;
ans += cntA;
}else{
--cntB;
}
}
if(x == r[i].size() && y == r[j].size()){
break;
}else if(x == r[i].size()){
cur = r[j][y];
++y;
}else if(y == r[j].size()){
cur = r[i][x];
++x;
}else{
if(r[i][x] < r[j][y]){
cur = r[i][x];
++x;
}else{
cur = r[j][y];
++y;
}
}
}
cache[make_pair(i, j)] = ans;
//cache[i][j] = ans;
}
}
}
for(int i=0;i<R;++i){
if((int)r[i].size() >= c){
for(int j=0;j<R;++j){
if(i == j){
continue;
}
int x = 0, y = 0;
int cur;
if(r[i][0] < r[j][0]){
cur = r[i][0];
++x;
}else{
cur = r[j][0];
++y;
}
int cntA = 0, cntB = 0;
int ans = 0;
while(true){
auto P = ord[cur];
if(H[P.fi] == i){
if(P.se == 0){
++cntA;
}else{
--cntA;
}
}else{
if(P.se == 0){
++cntB;
ans += cntA;
}else{
--cntB;
}
}
if(x == r[i].size() && y == r[j].size()){
break;
}else if(x == r[i].size()){
cur = r[j][y];
++y;
}else if(y == r[j].size()){
cur = r[i][x];
++x;
}else{
if(r[i][x] < r[j][y]){
cur = r[i][x];
++x;
}else{
cur = r[j][y];
++y;
}
}
}
cache[make_pair(i, j)] = ans;
// if(i == j){
// continue;
// }
// vector<int> tmp;
// for(auto P : r[i]){
// tmp.pb(P);
// }
// for(auto P : r[j]){
// tmp.pb(P);
// }
// sort(All(tmp));
// int cntA = 0, cntB = 0;
// int ans = 0;
// for(auto ii : tmp){
// auto P = ord[ii];
// if(H[P.fi] == i){
// if(P.se == 0){
// ++cntA;
// }else{
// --cntA;
// }
// }else{
// if(P.se == 0){
// ++cntB;
// ans += cntA;
// }else{
// --cntB;
// }
// }
// }
// //cache[i][j] = ans;
// cache[make_pair(i, j)] = ans;
}
}
}
while(Q--){
int r1, r2;
cin >> r1 >> r2;
--r1, --r2;
if((int)r[r1].size() >= c || (int)r[r2].size() >= c){
cout << cache[make_pair(r1, r2)] << endl;
cout.flush();
}else{
int x = 0, y = 0;
int cur;
if(r[r1][0] < r[r2][0]){
cur = r[r1][0];
++x;
}else{
cur = r[r2][0];
++y;
}
int cntA = 0, cntB = 0;
int ans = 0;
while(true){
auto P = ord[cur];
if(H[P.fi] == r1){
if(P.se == 0){
++cntA;
}else{
--cntA;
}
}else{
if(P.se == 0){
++cntB;
ans += cntA;
}else{
--cntB;
}
}
if(x == r[r1].size() && y == r[r2].size()){
break;
}else if(x == r[r1].size()){
cur = r[r2][y];
++y;
}else if(y == r[r2].size()){
cur = r[r1][x];
++x;
}else{
if(r[r1][x] < r[r2][y]){
cur = r[r1][x];
++x;
}else{
cur = r[r2][y];
++y;
}
}
}
cout << ans << endl;
cout.flush();
}
}
}
Compilation message
regions.cpp: In function 'int main()':
regions.cpp:107:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
107 | if(x == r[i].size() && y == r[j].size()){
| ~~^~~~~~~~~~~~~~
regions.cpp:107:46: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
107 | if(x == r[i].size() && y == r[j].size()){
| ~~^~~~~~~~~~~~~~
regions.cpp:109:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
109 | }else if(x == r[i].size()){
| ~~^~~~~~~~~~~~~~
regions.cpp:112:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
112 | }else if(y == r[j].size()){
| ~~^~~~~~~~~~~~~~
regions.cpp:164:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
164 | if(x == r[i].size() && y == r[j].size()){
| ~~^~~~~~~~~~~~~~
regions.cpp:164:46: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
164 | if(x == r[i].size() && y == r[j].size()){
| ~~^~~~~~~~~~~~~~
regions.cpp:166:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
166 | }else if(x == r[i].size()){
| ~~^~~~~~~~~~~~~~
regions.cpp:169:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
169 | }else if(y == r[j].size()){
| ~~^~~~~~~~~~~~~~
regions.cpp:254:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
254 | if(x == r[r1].size() && y == r[r2].size()){
| ~~^~~~~~~~~~~~~~~
regions.cpp:254:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
254 | if(x == r[r1].size() && y == r[r2].size()){
| ~~^~~~~~~~~~~~~~~
regions.cpp:256:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
256 | }else if(x == r[r1].size()){
| ~~^~~~~~~~~~~~~~~
regions.cpp:259:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
259 | }else if(y == r[r2].size()){
| ~~^~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
18 ms |
19456 KB |
Execution killed with signal 11 |
| 2 |
Runtime error |
15 ms |
19400 KB |
Execution killed with signal 11 |
| 3 |
Runtime error |
15 ms |
19480 KB |
Execution killed with signal 11 |
| 4 |
Correct |
14 ms |
9672 KB |
Output is correct |
| 5 |
Correct |
11 ms |
9800 KB |
Output is correct |
| 6 |
Runtime error |
18 ms |
19676 KB |
Execution killed with signal 11 |
| 7 |
Correct |
55 ms |
9800 KB |
Output is correct |
| 8 |
Correct |
37 ms |
9928 KB |
Output is correct |
| 9 |
Correct |
89 ms |
10440 KB |
Output is correct |
| 10 |
Correct |
102 ms |
10440 KB |
Output is correct |
| 11 |
Correct |
250 ms |
12624 KB |
Output is correct |
| 12 |
Correct |
171 ms |
11484 KB |
Output is correct |
| 13 |
Correct |
377 ms |
13880 KB |
Output is correct |
| 14 |
Correct |
616 ms |
14028 KB |
Output is correct |
| 15 |
Correct |
824 ms |
19108 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1843 ms |
18088 KB |
Output is correct |
| 2 |
Correct |
1432 ms |
16916 KB |
Output is correct |
| 3 |
Correct |
3076 ms |
22472 KB |
Output is correct |
| 4 |
Runtime error |
40 ms |
23512 KB |
Execution killed with signal 11 |
| 5 |
Runtime error |
47 ms |
28432 KB |
Execution killed with signal 11 |
| 6 |
Runtime error |
64 ms |
26660 KB |
Execution killed with signal 11 |
| 7 |
Runtime error |
76 ms |
29120 KB |
Execution killed with signal 11 |
| 8 |
Runtime error |
148 ms |
44748 KB |
Execution killed with signal 11 |
| 9 |
Runtime error |
191 ms |
42868 KB |
Execution killed with signal 11 |
| 10 |
Runtime error |
190 ms |
56912 KB |
Execution killed with signal 11 |
| 11 |
Runtime error |
206 ms |
42024 KB |
Execution killed with signal 11 |
| 12 |
Runtime error |
242 ms |
45260 KB |
Execution killed with signal 11 |
| 13 |
Runtime error |
193 ms |
46680 KB |
Execution killed with signal 11 |
| 14 |
Runtime error |
204 ms |
45820 KB |
Execution killed with signal 11 |
| 15 |
Runtime error |
1770 ms |
58796 KB |
Execution killed with signal 11 |
| 16 |
Runtime error |
212 ms |
76200 KB |
Execution killed with signal 11 |
| 17 |
Runtime error |
211 ms |
73040 KB |
Execution killed with signal 11 |
