Submission #628887

#	Time	Username	Problem	Language	Result	Execution time	Memory
628887		hy_1	Keys (IOI21_keys)	C++17	Compilation error	0 ms	0 KiB

keys

#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <cmath>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdio.h>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <unordered_map>
   
using namespace std;


int dfs(int source , vector<int> &c , int vv , vector<vector<pair<int , int > > > &adj){
	int cnt = 0;
	stack<int> st;
	st.push(source);
	set<int> stock;
	stock.insert(c[source]);
	vector<int> visited(vv , false);
	int cnt = 0;
	while(!st.empty()){
		int cur = st.top();
		st.pop();
		visited[cur] = true;
		for(pair<int , int > i : adj[cur]){
			if(visited[i.first] == false && (count(stock.begin() , stock.end() , i.second)) != 0){
				st.push(i.first);
				visited[i.first] = true;
				cnt++;
			}
		}
	}
	return cnt;
}

vector<int> find_reachable(vector<int> r, vector<int> u, vector<int> v, vector<int> c) {
	vector<vector< pair<int, int > > > adj(r.size());
	for(int j=0; j<u.size(); j++){
		pair<int , int> you;
		you.first = v[j];
		you.second = c[j];
		adj[u[j]].push_back(you);
		pair<int , int> rr;
		rr.first = u[j];
		rr.second = c[j];
		adj[v[j]].push_back(rr);
	}
	vector<int> mx(r.size());
	for(int i  = 0; i <r.size(); i++){
		mx[i] = dfs(i , c , r.size()  , adj);
	}

	int y = *min_element(mx.begin() , mx.end());
	vector<int> ans(r.size() , 0);
	for(int i=0; i <mx.size(); i++){
		if(mx[i] == y) ans[i] = 1;
	}
	return ans;
}

Compilation message (stderr)

keys.cpp: In function 'int dfs(int, std::vector<int>&, int, std::vector<std::vector<std::pair<int, int> > >&)':
keys.cpp:47:6: error: redeclaration of 'int cnt'
   47 |  int cnt = 0;
      |      ^~~
keys.cpp:41:6: note: 'int cnt' previously declared here
   41 |  int cnt = 0;
      |      ^~~
keys.cpp: In function 'std::vector<int> find_reachable(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
keys.cpp:65:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |  for(int j=0; j<u.size(); j++){
      |               ~^~~~~~~~~
keys.cpp:76:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |  for(int i  = 0; i <r.size(); i++){
      |                  ~~^~~~~~~~~
keys.cpp:82:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |  for(int i=0; i <mx.size(); i++){
      |               ~~^~~~~~~~~~