Submission #1078382

#	Time	Username	Problem	Language	Result	Execution time	Memory
1078382		Maite_Morale	Magic Show (APIO24_show)	C++17	0 / 100	1 ms	344 KiB

Alice

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pll pair<ll,ll>
#define F first
#define S second

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 x1 = setN(nodes);
	pll x={x1/nodes,x1%nodes};
	if(x.S==0)x.S=nodes;
	if(x.F==0)x.F=nodes;
	std::vector<std::pair<int,int>> r={};
	for(int i=1;i<=nodes/2;i++)      if(x.F!=i && x.S!=i)r.push_back({x.F,i});
	for(int i=nodes/2+1;i<=nodes;i++)if(x.F!=i && x.S!=i)r.push_back({x.S,i});
return r;
}

Bob

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pll pair<ll,ll>
#define F first
#define S second

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;
long long Bob(std::vector<std::pair<int,int>> V){
	map<ll,ll> mp;pll r{-1,-1};
	for(int i=0;i<V.size();i++){
		mp[V[i].first]++;mp[V[i].second]++;
		if(mp[V[i].F]==2)if(r.F==-1)r.F=V[i].F;else r.S=V[i].F;
		if(mp[V[i].S]==2)if(r.F==-1)r.F=V[i].F;else r.S=V[i].F;
	}
	for(int i=0;i<V.size();i++){
		if(V[i].F==r.F || V[i].F==r.S)swap(V[i].F,V[i].S);
		if(V[i].F<=nodes/2 && V[i].S!=r.F)swap(r.F,r.S);
	}
	r.F%=nodes;r.S%=nodes;
	ll ans=r.F*nodes+r.S;
	if(ans==0)ans=nodes*nodes;
	return ans;
}

Compilation message (stderr)

Bob.cpp: In function 'long long int Bob(std::vector<std::pair<int, int> >)':
Bob.cpp:15:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for(int i=0;i<V.size();i++){
      |              ~^~~~~~~~~
Bob.cpp:17:5: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
   17 |   if(mp[V[i].F]==2)if(r.F==-1)r.F=V[i].F;else r.S=V[i].F;
      |     ^
Bob.cpp:18:5: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
   18 |   if(mp[V[i].S]==2)if(r.F==-1)r.F=V[i].F;else r.S=V[i].F;
      |     ^
Bob.cpp:20:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |  for(int i=0;i<V.size();i++){
      |              ~^~~~~~~~~

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