Submission #685913

#	Time	Username	Problem	Language	Result	Execution time	Memory
685913		ReLice	Table Tennis (info1cup20_tabletennis)	C++14	29 / 100	3086 ms	18100 KiB

tabletennis

#include<bits/stdc++.h>
using namespace std;
#define endl "\n"
#define ll long long
#define pb push_back
#define pob pop_back
#define sz size()
#define fr first
#define sc second
#define all(x) x.begin(),x.end()
void start(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}
const ll N = 5e4+10;
const ll mod=1e9+7;
const ll inf=1e10;
map<ll,ll> mp;
vector <ll> ans;
vector <ll> v;
ll n,k;
bool flag=false;
void go(ll ind, ll u){
    if(flag) return;
    if(u==0){
        ll l=0,r=n-1,b=ans[0]+ans[n-1];
        while(l<r){
            if(ans[l]+ans[r]!=b) return;
            l++;
            r--;
        }
        flag=true;
        return;
    }
    if(ind==n+k) return;
    ans.pb(v[ind]);
    go(ind+1,u-1);
    if(flag) return;
    ans.pob();
    go(ind+1,u);
    if(flag) return;
}
void solve(){
    ll i,j;
    ll m,b,x=0,y=0,c=0,sum=0;
    cin>>n>>k;
    for(i=0;i<n+k;i++){
        cin>>b;
        v.pb(b);
        mp[b]=i+1;
        sum+=b;
    }if(k==1){
        b=sum-(n/2)*(v[0]+v[n]);
        x=v[0]+v[n];
        if(mp[b]>=0){
            ll l=0,r=n+k-1;
            bool flag=true;
            while(l<r){
                if(l==mp[b]-1)l++;
                if(r==mp[b]-1)r--;
                if(v[l]+v[r]!=x) {
                    flag=false;
                    break;
                }
                l++;
                r--;
            }
            if(flag){
                for(i=0;i<n+k;i++){
                    if(i==mp[b]-1)continue;
                    cout<<v[i]<<' ';
 
                }
                cout<<endl;
                return;
            }
        }
 
 
        b=sum-(n/2)*(v[1]+v[n]);
        x=v[1]+v[n];
        if(mp[b]==1){
            ll l=1,r=n+k-1;
            bool flag=true;
            while(l<r){
                if(v[l]+v[r]!=x) {
                    flag=false;
                    break;
                }
                l++;
                r--;
            }
            if(flag){
                for(i=1;i<n+k;i++){
                    if(i==mp[b]-1)continue;
                    cout<<v[i]<<' ';
 
                }
                cout<<endl;
                return;
            }
        }
 
 
        b=sum-(n/2)*(v[0]+v[n-1]);
        x=v[0]+v[n-1];
        if(mp[b]==n+k){
            ll l=0,r=n+k-2;
            bool flag=true;
            while(l<r){
                if(v[l]+v[r]!=x) {
                    flag=false;
                    break;
                }
                l++;
                r--;
            }
            if(flag){
                for(i=0;i<n+k;i++){
                    if(i==mp[b]-1)continue;
                    cout<<v[i]<<' ';
 
                }
                cout<<endl;
                return;
            }
        }
    }
    else{
        go(0,n);
        for(auto i : ans) cout<<i<<' ';
        cout<<endl;
    }
}
main(){
    //fre("");
    start();
    ll t=1;
    //cin>>t;
    while(t--)solve();
}

Compilation message (stderr)

tabletennis.cpp: In function 'void solve()':
tabletennis.cpp:45:10: warning: unused variable 'j' [-Wunused-variable]
   45 |     ll i,j;
      |          ^
tabletennis.cpp:46:8: warning: unused variable 'm' [-Wunused-variable]
   46 |     ll m,b,x=0,y=0,c=0,sum=0;
      |        ^
tabletennis.cpp:46:16: warning: unused variable 'y' [-Wunused-variable]
   46 |     ll m,b,x=0,y=0,c=0,sum=0;
      |                ^
tabletennis.cpp:46:20: warning: unused variable 'c' [-Wunused-variable]
   46 |     ll m,b,x=0,y=0,c=0,sum=0;
      |                    ^
tabletennis.cpp: At global scope:
tabletennis.cpp:136:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  136 | main(){
      | ^~~~

• Subtask 1: 11 / 11
• Subtask 2: 9 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 9 / 9
• Subtask 6: 0 / 14
• Subtask 7: 0 / 15
• Subtask 8: 0 / 13