Submission #904839

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
904839	2024-01-12 10:20:59	simona1230	Love Polygon (BOI18_polygon)	C++17	100 / 100	210 ms	11576 KiB

polygon

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#include <bits/stdc++.h>
using namespace std;
int n,names=1;
map<string,int> mp;
int nxt[100001],in[100001];
void read()
{
    cin>>n;
    for(int i=1; i<=n; i++)
    {
        string a,b;
        cin>>a>>b;
        if(!mp[a])mp[a]=names++;
        if(!mp[b])mp[b]=names++;
        nxt[mp[a]]=mp[b];
        in[mp[b]]++;
        if(a==b)nxt[mp[a]]=0;
    }
    if(n%2==1)
    {
        cout<<"-1"<<endl;
        exit(0);
    }
}
int used[100001];
queue<int> q;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

polygon.cpp: In function 'void solve()':
polygon.cpp:39:9: warning: unused variable 'cnt' [-Wunused-variable]
   39 |     int cnt=0,ans=0;
      |         ^~~

• Subtask 1: 21 / 21
• Subtask 2: 25 / 25
• Subtask 3: 29 / 29
• Subtask 4: 25 / 25