제출 #392130

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
392130	2021-04-20 14:30:46	Victor	Paths (BOI18_paths)	C++17	100 / 100	475 ms	98528 KiB

paths

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#include <bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for (int i = a; i < b; ++i)
#define per(i, a, b) for (int i = b - 1; i >= a; --i)
#define trav(a, x) for (auto& a : x)
#define sz(a) a.size()
#define umap unordered_map
#define uset unordered_set
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
vi graph[300001];
ll memo[300001][32];
int colors[300001];
ll dp(int u, int mask) {
    ll& ans = memo[u][mask];
    if (ans != -1) return ans;
    ans = 1;
    trav(v, graph[u])if(mask&(1<<colors[v]))ans+=dp(v,mask^(1<<colors[v]));
    return ans;
}
int main() {
    cin.tie(0)->sync_with_stdio(0);
    memset(memo, -1, sizeof(memo));
 
 
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• Subtask 1: 23 / 23
• Subtask 2: 20 / 20
• Subtask 3: 27 / 27
• Subtask 4: 30 / 30