제출 #589238

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
589238		FatihSolak	친구 (IOI14_friend)	C++17	컴파일 에러	0 ms	0 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>
#define N 1005
using namespace std;
vector<int> adj[N];
bool vis[N];
int C[N];
int dfs(int v){
	vis[v] = 1;
	int ret = C[v];
	for(auto u:adj[v]){
		if(vis[u])continue;
		ret = max(ret,dfs(u));
	}
	return ret;
}
// Find out best sample
int findSample(int n,int confidence[],int host[],int protocol[]){
	for(int i = 0;i<n;i++){
		C[i] = confidence[i];
	}
	int SUBTASK = 1;
	set<int> s;
	for(int i = 1;i<n;i++){
		s.insert(protocol[i]);
	}
	if(n > 10 && s.size() == 2){
		SUBTASK = 5;
	}
	if(n > 10 && s.size() == 1){
		if(*s.begin() == 0){
			SUBTASK = 4;
		}
		if(*s.begin() == 1){
			SUBTASK = 2;
		}
		if(*s.begin() == 2){
			SUBTASK = 3;
		}
	}
	if(SUBTASK == 1){
		for(int i = 1;i<n;i++){
			if(protocol[i] == 0){
				adj[i].push_back(host[i]);
				adj[host[i]].push_back(i);
			}
			if(protocol[i] == 1){
				for(auto u:adj[host[i]]){
					adj[i].push_back(u);
					adj[u].push_back(i);
				}
			}
			if(protocol[i] == 2){
				for(auto u:adj[host[i]]){
					adj[i].push_back(u);
					adj[u].push_back(i);
				}
				adj[i].push_back(host[i]);
				adj[host[i]].push_back(i);
			}
		}
		long long ans = 0;
		for(int mask = 1;mask < (1<<n);mask++){
			long long sum = 0;
			bool ok = 1;
			for(int i = 0;i<n;i++){
				if(mask & (1<<i)){
					sum += confidence[i];
					for(auto u:adj[i]){
						if(mask & ( 1<<u))
							ok = 0;
					}
				}
			}
			if(ok){
				ans = max(ans,sum);
			}
		}
		return ans;
	}
	if(SUBTASK == 2){
		long long sum = 0;
		for(int i = 0;i<n;i++){
			sum += confidence[i];
		}
		return sum;
	}
	if(SUBTASK == 3){
		for(int i = 1;i<n;i++){
			if(protocol[i] == 0){
				adj[i].push_back(host[i]);
				adj[host[i]].push_back(i);
			}
			if(protocol[i] == 1){
				for(auto u:adj[host[i]]){
					adj[i].push_back(u);
					adj[u].push_back(i);
				}
			}
			if(protocol[i] == 2){
				for(auto u:adj[host[i]]){
					adj[i].push_back(u);
					adj[u].push_back(i);
				}
				adj[i].push_back(host[i]);
				adj[host[i]].push_back(i);
			}
		}
		long long sum = 0;
		for(int i = 0;i<n;i++){
			if(!vis[i]){
				sum += dfs0(i);
			}
		}
		return sum;
	}
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

friend.cpp: In function 'int findSample(int, int*, int*, int*)':
friend.cpp:112:12: error: 'dfs0' was not declared in this scope; did you mean 'dfs'?
  112 |     sum += dfs0(i);
      |            ^~~~
      |            dfs