이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
//#include "september.h"
#define all(v) v.begin(), v.end()
using namespace std;
using ll = long long;
using P = pair<ll, ll>;
using PP = pair<ll, P>;
const ll n_ = 1e5 + 10, inf = (ll)2e9 * (ll)1e9 + 7, mod = 998244353;
ll n, m, tc = 1, a, b, c, d, sum, x, y, z, base, ans, k;
ll par[n_], idx[n_][6], mx[n_], L[n_],R[n_];
vector<ll> v[n_];
void dfs(ll x) {
for(auto nxt:v[x]){
dfs(nxt);
R[x]=max(R[x],R[nxt]);
}
}
int solve(int N, int M, vector<int> F, vector<vector<int>> S) {
n = N - 1, m = M;
memset(par, -1, sizeof(par));
vector<ll> T;
for(int i=0;i<=n;i++)L[i]=inf,R[i]=-inf;
for (int j = 0; j < m; j++)
for (int i = 0; i < n; i++) {
ll val=S[j][i];
L[val]=min(L[val],(ll)i);
R[val]=max(R[val],(ll)i);
}
for (int i = 1; i <= n; i++)v[F[i]].push_back(i);
dfs(0);
vector<P>v;
for(int i=1;i<=n;i++)v.push_back({L[i],R[i]});
sort(all(v));
ll lim=-inf,ret=0;
for(auto [a,b]:v){
if(lim<a){
ret++;
lim=b;
}
else lim=max(lim,b);
}
return ret;
}
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