Submission #1105197

#	Time	Username	Problem	Language	Result	Execution time	Memory
1105197		jadai007	Tropical Garden (IOI11_garden)	C++17	0 / 100	5 ms	4944 KiB

garden

#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>

using namespace std;

void count_routes(int N, int M, int P, int R[][2], int Q, int G[]){
    vector<int> vc[200200], ans(Q, 0), dis(N, 0), vis(N, 0);
    queue<pair<int, int>> q;
    for(int i = 0; i < M; ++i) vc[R[i][0]].push_back(R[i][1]), vc[R[i][1]].push_back(R[i][0]);
    q.emplace(P, 0);
    vis[P] = 1;
    while(!q.empty()){
        int u = q.front().first, w = q.front().second; q.pop();
        for(auto v:vc[u]){
            if(vis[v]) continue;
            dis[v] = w + 1;
            vis[v] = 1;
            q.emplace(v, w + 1);
        }
    }
    int n = -1;
    for(int i = 0; i < Q; ++i) n = max(n, G[i]);
    vector<int> dp(n+1, 0);
    dp[0] = 1;
    for(int i = 1; i <= n; ++i){
        for(int j = 0; j < N; ++j){
            if(i - 2*dp[j] >= 0) dp[i] += dp[i - 2*dp[j]];
        }
    }
    for(int i = 0; i < Q; ++i) answer(dp[G[i]]);
}

• Subtask 1: 0 / 49
• Subtask 2: 0 / 20
• Subtask 3: 0 / 31