Submission #365955

#	Time	Username	Problem	Language	Result	Execution time	Memory
365955		Belal	Table Tennis (info1cup20_tabletennis)	C++14	100 / 100	258 ms	8044 KiB

tabletennis

#include <bits/stdc++.h>
using namespace std;
int arr[150405],arr2[150005],n,k;

bool fun(int idx,int x,int y,int sum){
    if(idx==n/2 && arr[x]+arr[y]==sum){
        arr2[idx-1]=arr[x];
        arr2[n-idx]=arr[y];
        return true;
    }
    if((x-idx+1+n-1-y-idx+1==k&&arr[x]+arr[y]!=sum)||y-1==x ||y==x){return false;}

    if(arr[x]+arr[y]==sum){
        if(fun(idx+1,x+1,y-1,sum)){
            arr2[idx-1]=arr[x];
            arr2[n-idx]=arr[y];
            return true;
        }
        else{return false;}
    }
    if(arr[x]+arr[y]>sum){return fun(idx,x,y-1,sum);}
    if(arr[x]+arr[y]<sum){return fun(idx,x+1,y,sum);}

}
int main() {
    cin>>n>>k;
    for(int i=0;i<n+k;i++){
        cin>>arr[i];
    }
    for(int i=0;i<=k;i++){
        for(int j=n+k-1;j>=i-1+n;j--){
            if(fun(1,i,j,arr[i]+arr[j])){
                cout<<arr2[0];
                for(int g=1;g<n;g++){
                    cout<<" "<<arr2[g];
                }
                return 0;
            }
        }
    }
    return 0;
}

Compilation message (stderr)

tabletennis.cpp: In function 'bool fun(int, int, int, int)':
tabletennis.cpp:24:1: warning: control reaches end of non-void function [-Wreturn-type]
   24 | }
      | ^

• Subtask 1: 11 / 11
• Subtask 2: 9 / 9
• Subtask 3: 14 / 14
• Subtask 4: 15 / 15
• Subtask 5: 9 / 9
• Subtask 6: 14 / 14
• Subtask 7: 15 / 15
• Subtask 8: 13 / 13