Submission #534763

#	Time	Username	Problem	Language	Result	Execution time	Memory
534763		Icebear16	Keys (IOI21_keys)	C++17	9 / 100	93 ms	21640 KiB

keys

#include <bits/stdc++.h>

std::vector<int> adj[2000];
std::vector<bool> visited(2000,false);
int k=0;
void dfs(int u){
	if(visited[u]){
		return;
	}else{
		visited[u]=true;
		k+=1;
//		std::cout<<u<<" ";
	}
	for(int i=0;i<adj[u].size();i++){
		int v=adj[u][i];
		dfs(v);
	}
}

std::vector<int> find_reachable(std::vector<int> r, std::vector<int> u, std::vector<int> v, std::vector<int> c) {
	std::vector<int> ans(r.size(), 1);
	for(int i=0;i<u.size();i++){
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	for(int i=0;i<r.size();i++){
		if(r[i]==0){
//			std::cout<<std::endl;
			dfs(i);
//			std::cout<<k<<std::endl;
			ans[i]=k;
			k=0;
			for(int j=0;j<r.size();j++){
				visited[j]=false;
			}
		}
	}
	int m=1000000;
	for(int i=0;i<r.size();i++){
		m=std::min(m,ans[i]);
	}
//	return ans;
	for(int i=0;i<r.size();i++){
		if(ans[i]==m){
			ans[i]=1;
		}else{
			ans[i]=0;
		}
	}
	return ans;
}

Compilation message (stderr)

keys.cpp: In function 'void dfs(int)':
keys.cpp:14:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for(int i=0;i<adj[u].size();i++){
      |              ~^~~~~~~~~~~~~~
keys.cpp: In function 'std::vector<int> find_reachable(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
keys.cpp:22:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |  for(int i=0;i<u.size();i++){
      |              ~^~~~~~~~~
keys.cpp:26:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |  for(int i=0;i<r.size();i++){
      |              ~^~~~~~~~~
keys.cpp:33:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |    for(int j=0;j<r.size();j++){
      |                ~^~~~~~~~~
keys.cpp:39:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |  for(int i=0;i<r.size();i++){
      |              ~^~~~~~~~~
keys.cpp:43:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |  for(int i=0;i<r.size();i++){
      |              ~^~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 0 / 11
• Subtask 3: 0 / 17
• Subtask 4: 0 / 30
• Subtask 5: 0 / 33