| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1173077 | ladnooo | September (APIO24_september) | C++20 | 112 ms | 11712 KiB |
#include <bits/stdc++.h>
using namespace std;
int solve(int N, int M, std::vector<int> F, std::vector<std::vector<int>> S) {
int sum = 0;
vector<int> was(N), used(N), wass(N - 1, 1);
int sx = 0;
for(int i = 0; i < N - 1; i++) {
for(int j = 0; j < M; j++) {
was[S[j][i]]++;
if(was[S[j][i]] == 1) sx++;
if(was[S[j][i]] == M) sx--;
}
if(sx > 0) wass[i] = 0;
}
vector<int> g[N];
for(int i = 1; i < N; i++) {
g[F[i]].push_back(i);
}
int cnt = 0;
for (int i = 0; i < N - 1; i++)
{
int curr = S[0][i];
if(used[curr] == 2) {
cnt--;
}
used[curr] = 1;
for(int u : g[curr]) {
if (used[u] != 1) {
used[u] = 2;
cnt++;
}
}
if((cnt == 0) && (wass[i] == 1)) sum++;
}
return sum;
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