Submission #1078336

#	Time	Username	Problem	Language	Result	Execution time	Memory
1078336		Maite_Morale	Magic Show (APIO24_show)	C++17	5 / 100	2 ms	832 KiB

Alice

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

std::vector<std::pair<int,int>> Alice();
long long setN(int n);
long long Bob(std::vector<std::pair<int,int>> V);

const ll nodes=5000;
std::vector<std::pair<int,int>> Alice(){
    long long x = setN(nodes);
	std::vector<std::pair<int,int>> r={};
	for(int i=1;i<=nodes;i++)if(x!=i)r.push_back({x,i});
return r;
}

Bob

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

std::vector<std::pair<int,int>> Alice();
long long setN(int n);
long long Bob(std::vector<std::pair<int,int>> V);

long long Bob(std::vector<std::pair<int,int>> V){
	map<ll,ll> mp;
	for(int i=0;i<V.size();i++){
		mp[V[i].first]++;mp[V[i].second]++;
		if(mp[V[i].first]==2)return V[i].first;
		if(mp[V[i].second]==2)return V[i].second;
	}
	return 0;
}

Compilation message (stderr)

Bob.cpp: In function 'long long int Bob(std::vector<std::pair<int, int> >)':
Bob.cpp:11:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for(int i=0;i<V.size();i++){
      |              ~^~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 30
• Subtask 3: 0 / 65