//
// ~oisín~ C++ Template
//
#include <bits/stdc++.h>
#define MX_N 5001
#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 main(){
cin >> N >> R >> Q;
// int c = sqrt(N);
int c = 1;
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(auto p : ord){
// cout << p.fi+1 << ' ';
// }
// cout << endl;
for(int j=0;j<R;++j){
if((int)r[j].size() >= c){
for(int i=0;i<R;++i){
if(i == j){
continue;
}
//cout << "i & j = " << i+1 << " & " << j+1 << endl;
vector<int> tmp;
for(auto P : r[i]){
//cout << P << ' ';
tmp.pb(P);
}
//cout << endl;
for(auto P : r[j]){
//cout << P << ' ';
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;
//ans += cntB;
}else{
--cntA;
}
}else{
if(P.se == 0){
++cntB;
ans += cntA;
}else{
--cntB;
}
}
}
//cout << "\nans = " << ans << endl;
cache[make_pair(i, j)] = ans;
}
}
}
//cout << "Again, but backwards:\n";
for(int i=0;i<R;++i){
if((int)r[i].size() >= c){
for(int j=0;j<R;++j){
if(i == j){
continue;
}
//cout << "i & j = " << i+1 << " & " << j+1 << endl;
vector<int> tmp;
for(auto P : r[i]){
//cout << P << ' ';
tmp.pb(P);
}
//cout << endl;
for(auto P : r[j]){
//cout << P << ' ';
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;
//ans += cntB;
}else{
--cntA;
}
}else{
if(P.se == 0){
++cntB;
ans += cntA;
}else{
--cntB;
}
}
}
//cout << "\nans = " << ans << endl;
cache[make_pair(i, j)] = ans;
}
}
}
// for(int i=0;i<R;++i){
// for(int x : r[i]){
// cout << x << ' ';
// }
// cout << endl;
// }
while(Q--){
int r1, r2;
cin >> r1 >> r2;
--r1, --r2;
if((int)r[r1].size() >= c){
cout << cache[make_pair(r1, r2)] << endl;
}
}
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Execution timed out |
1 ms |
456 KB |
Time limit exceeded (wall clock) |
| 2 |
Execution timed out |
1 ms |
456 KB |
Time limit exceeded (wall clock) |
| 3 |
Execution timed out |
1 ms |
456 KB |
Time limit exceeded (wall clock) |
| 4 |
Correct |
9 ms |
584 KB |
Output is correct |
| 5 |
Correct |
11 ms |
584 KB |
Output is correct |
| 6 |
Execution timed out |
67 ms |
4420 KB |
Time limit exceeded (wall clock) |
| 7 |
Correct |
119 ms |
1996 KB |
Output is correct |
| 8 |
Correct |
148 ms |
3144 KB |
Output is correct |
| 9 |
Correct |
509 ms |
6872 KB |
Output is correct |
| 10 |
Runtime error |
5 ms |
1352 KB |
Execution killed with signal 11 |
| 11 |
Runtime error |
4 ms |
1352 KB |
Execution killed with signal 11 |
| 12 |
Runtime error |
7 ms |
1480 KB |
Execution killed with signal 11 |
| 13 |
Runtime error |
5 ms |
1096 KB |
Execution killed with signal 11 |
| 14 |
Runtime error |
5 ms |
1400 KB |
Execution killed with signal 11 |
| 15 |
Runtime error |
5 ms |
1224 KB |
Execution killed with signal 11 |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
5 ms |
1540 KB |
Execution killed with signal 11 |
| 2 |
Runtime error |
5 ms |
1452 KB |
Execution killed with signal 11 |
| 3 |
Runtime error |
5 ms |
1152 KB |
Execution killed with signal 11 |
| 4 |
Runtime error |
5 ms |
1352 KB |
Execution killed with signal 11 |
| 5 |
Runtime error |
4 ms |
1192 KB |
Execution killed with signal 11 |
| 6 |
Runtime error |
5 ms |
1196 KB |
Execution killed with signal 11 |
| 7 |
Runtime error |
7 ms |
1352 KB |
Execution killed with signal 6 |
| 8 |
Runtime error |
6 ms |
1224 KB |
Execution killed with signal 11 |
| 9 |
Runtime error |
5 ms |
1224 KB |
Execution killed with signal 11 |
| 10 |
Runtime error |
5 ms |
1224 KB |
Execution killed with signal 11 |
| 11 |
Runtime error |
5 ms |
1096 KB |
Execution killed with signal 11 |
| 12 |
Runtime error |
4 ms |
1224 KB |
Execution killed with signal 11 |
| 13 |
Runtime error |
5 ms |
1224 KB |
Execution killed with signal 11 |
| 14 |
Runtime error |
6 ms |
1096 KB |
Execution killed with signal 11 |
| 15 |
Runtime error |
6 ms |
1224 KB |
Execution killed with signal 11 |
| 16 |
Runtime error |
5 ms |
1224 KB |
Execution killed with signal 11 |
| 17 |
Runtime error |
5 ms |
1224 KB |
Execution killed with signal 11 |
