Submission #43394

#	Time	Username	Problem	Language	Result	Execution time	Memory
43394		Hassoony	Carnival (CEOI14_carnival)	C++14	20 / 100	19 ms	4368 KiB

carnival

#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
const int MX=3e5+9;
int n,p[MX],vis[MX];
int find(int x){
    if(x==p[x])return x;
    return p[x]=find(p[x]);
}
map<int,int>hashy;
void merge_(int x,int y){
    x=find(x);
    y=find(y);
    p[y]=x;
}
int main(){
    scanf("%d",&n);
    for(int i=1;i<=n;i++)p[i]=i;
    for(int i=1;i<=n;i++){
        for(int j=i+1;j<=n;j++){
            if(vis[i]||vis[j])continue;
            cout<<2<<" "<<i<<" "<<j<<endl;
            int x; scanf("%d",&x);
            if(x==1)merge_(i,j),vis[j]=1;
        }
    }
    for(int i=1;i<=n;i++){
        hashy[p[i]]=1;
    }
    int tt=1;
    for(auto pp:hashy){
        hashy[pp.first]=tt++;
    }
    cout<<0<<" ";
    for(int i=1;i<n;i++)cout<<hashy[p[i]]<<" ";
    cout<<hashy[p[n]]<<endl;
}

Compilation message (stderr)

carnival.cpp: In function 'int main()':
carnival.cpp:18:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
                   ^
carnival.cpp:24:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             int x; scanf("%d",&x);
                                  ^

• Subtask 1: 4 / 20
• Subtask 2: 4 / 20
• Subtask 3: 4 / 20
• Subtask 4: 4 / 20
• Subtask 5: 4 / 20