| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 718196 |
2023-04-03T15:33:54 Z |
bLIC |
Regions (IOI09_regions) |
C++17 |
|
141 ms |
3924 KB |
/**
* Author: Anil Byar
**/
#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>
// using namespace __gnu_pbds;
using namespace std;
// template<class T>
// using ordered_set = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) (int)(x).size()
#define ft first
#define sd second
#define pb push_back
// Source: https://codeforces.com/blog/entry/68809
// { start
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '"' << x << '"';}
void __print(const string &x) {cerr << '"' << x << '"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif
// } end
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii> vii;
typedef vector<ll> vl;
typedef vector<pll> vll;
typedef vector<vi> vvi;
typedef vector<vii> vvii;
typedef vector<vl> vvl;
#define dbg if(0)
const ll MOD = 1e9+7;
const ll MOD9 = 998244353;
const ll INFLL = 1e18+5;
const int INF = 1e9;
void printbit(int x, int len) {string s="\n";while(len--){s=((x%2)?'1':'0')+s;x/=2;} cout<<s;}
ll power(ll x, ll y, ll mod){if (y==0) return 1;ll ret = power(x, y/2, mod);ret *= ret;ret%=mod;if (y&1) ret *= x;return ret%mod;}
ll modinv(ll x, ll mod = MOD) {return power(x, mod-2, mod);}
template<class T>
istream& operator>>(istream&in, vector<T>&v){
for (T& x:v) in>>x;
return in;
}
template<class T>
ostream& operator<<(ostream&out, vector<T>&v){
for (T& x:v) out<<x<<' ';
cout<<'\n';
return out;
}
// use ?: with brackets (?:)
// check for overflow
// think about dp
const int maxN = 2e4+5;
const int maxK = 2505;
const int B = 447;
int n, r, q;
vvi adj(maxN);
vi regof(maxN);
vvi timing(maxK);
vi st(maxN), en(maxN);
vvi reg(maxK);
vector<bool> heavy(maxK);
unordered_map<int, int> cont;
unordered_map<int, int> ansforheavy[maxK];
int tim, hvy;
void dfs(int node){
st[node] = tim++;
if (heavy[regof[node]]){
cont[regof[node]]++;
}
timing[regof[node]].push_back(st[node]);
for (int x:adj[node]){
for (auto y:cont){
ansforheavy[regof[x]][y.ft] += y.sd;
}
dfs(x);
}
en[node] = tim;
if (heavy[regof[node]]){
cont[regof[node]]--;
}
}
ll query(int r1, int r2){
if (heavy[r1]) return ansforheavy[regof[r2]][regof[r1]];
else {
ll ans = 0;
for (int x:reg[r1]){
ans += lower_bound(all(timing[r2]), en[x])-upper_bound(all(timing[r2]), st[x]);
}
return ans;
}
}
void solve(){
cin>>n>>r>>q;
cin>>regof[1];
reg[regof[1]].push_back(1);
for (int i = 2;i<=n;i++){
int p;
cin>>p>>regof[i];
reg[regof[i]].push_back(i);
if (sz(reg[regof[i]])>B+1) reg[regof[i]].pop_back();
adj[p].push_back(i);
}
for (int i = 1;i<=r;i++){
if (sz(reg[i])>B){
heavy[i] = true;
}
}
dfs(1);
while(q--){
int r1, r2;
cin>>r1>>r2;
cout<<query(r1, r2)<<endl;
}
}
int main() {
// ios_base::sync_with_stdio(false);
// cin.tie(nullptr);
// cout.tie(nullptr);
// #ifndef ONLINE_JUDGE
// freopen("input.in", "r", stdin);
// freopen("output.out", "w", stdout);
// freopen("debug.dbg", "w", stderr);
// int tt = clock();
// #endif
int t=1, i = 1;
// cin>>t;
while(t--){
// cout<<"Case #"<<i++<<": ";
solve();
cout<<'\n';
}
// #ifndef ONLINE_JUDGE
// cerr << "TIME = " << (float)(clock() - tt)/CLOCKS_PER_SEC << endl;
// tt = clock();
// #endif
}
Compilation message
regions.cpp: In function 'int main()':
regions.cpp:176:14: warning: unused variable 'i' [-Wunused-variable]
176 | int t=1, i = 1;
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
1232 KB |
Output is correct |
| 2 |
Correct |
1 ms |
1232 KB |
Output is correct |
| 3 |
Correct |
2 ms |
1232 KB |
Output is correct |
| 4 |
Correct |
3 ms |
1232 KB |
Output is correct |
| 5 |
Correct |
8 ms |
1232 KB |
Output is correct |
| 6 |
Correct |
17 ms |
1360 KB |
Output is correct |
| 7 |
Correct |
25 ms |
1232 KB |
Output is correct |
| 8 |
Correct |
39 ms |
1360 KB |
Output is correct |
| 9 |
Correct |
54 ms |
2000 KB |
Output is correct |
| 10 |
Runtime error |
87 ms |
1608 KB |
Execution killed with signal 13 |
| 11 |
Correct |
122 ms |
2000 KB |
Output is correct |
| 12 |
Runtime error |
141 ms |
2656 KB |
Execution killed with signal 13 |
| 13 |
Runtime error |
12 ms |
3280 KB |
Execution killed with signal 11 |
| 14 |
Runtime error |
13 ms |
3692 KB |
Execution killed with signal 11 |
| 15 |
Runtime error |
14 ms |
3924 KB |
Execution killed with signal 11 |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
13 ms |
3664 KB |
Execution killed with signal 11 |
| 2 |
Runtime error |
12 ms |
3280 KB |
Execution killed with signal 11 |
| 3 |
Runtime error |
12 ms |
3792 KB |
Execution killed with signal 11 |
| 4 |
Runtime error |
16 ms |
3688 KB |
Execution killed with signal 11 |
| 5 |
Runtime error |
3 ms |
2512 KB |
Execution killed with signal 11 |
| 6 |
Runtime error |
2 ms |
2332 KB |
Execution killed with signal 11 |
| 7 |
Runtime error |
2 ms |
2560 KB |
Execution killed with signal 11 |
| 8 |
Runtime error |
2 ms |
2384 KB |
Execution killed with signal 11 |
| 9 |
Runtime error |
2 ms |
2384 KB |
Execution killed with signal 11 |
| 10 |
Runtime error |
2 ms |
2384 KB |
Execution killed with signal 11 |
| 11 |
Runtime error |
2 ms |
2384 KB |
Execution killed with signal 11 |
| 12 |
Runtime error |
2 ms |
2384 KB |
Execution killed with signal 11 |
| 13 |
Runtime error |
2 ms |
2384 KB |
Execution killed with signal 11 |
| 14 |
Runtime error |
2 ms |
2384 KB |
Execution killed with signal 11 |
| 15 |
Runtime error |
2 ms |
2384 KB |
Execution killed with signal 11 |
| 16 |
Runtime error |
2 ms |
2256 KB |
Execution killed with signal 11 |
| 17 |
Runtime error |
2 ms |
2384 KB |
Execution killed with signal 11 |
