Submission #1136046

#	Time	Username	Problem	Language	Result	Execution time	Memory
1136046		bpptidp	Table Tennis (info1cup20_tabletennis)	C++20	Compilation error	0 ms	0 KiB

tabletennis

#include<bits/stdc++.h>
using namespace std;
using ll=long long;

const int N=1.5e5,K=405;
int a[N+K],dp[K][K],n,k;

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
 	
    cin>>n>>k;
    for(int i=0;i<n+k;++i)
    	cin>>a[i];

    //O(nk+k^4)

    unordered_map<int,int>occ;

    int f=[](int x){return min(n+k-x-1,404);};

    for(int fi=0;fi<=k;++fi){
    	int se=fi+n-1,x=a[fi]+a[se],c=2;
    	for(int i=fi+1;i<se;++i)
    		++occ[a[i]];
		for(int i=fi+1;i<se;++i){
			if(2*a[i]>x)break;
			if(2*a[i]==x){
				if(occ[a[i]]<2)continue;
				c+=2;
				occ[a[i]]-=2;
			}else if(occ[x-a[i]]){
				c+=2;
				--occ[x-a[i]];
				--occ[a[i]];
			}
		}
		dp[fi][f(se)]=c;
    }

    for(int len=n+1;len<=n+k;++len){
    	for(int fi=0;fi+len<=n+k;++fi){
    		int se=fi+len-1,x=a[fi]+a[se],mx=0;
    		for(int i=fi+1;i+n-1<=se+1;++i){
    			for(int j=se-1;j-n+1>=fi-3;--j){
    				if(i<=fi||i>=se||j<=fi||j>=se)continue;
    				if(a[i]+a[j]!=x)continue;
    				mx=max(mx,dp[i][f(j)]);
    			}
    		}
    		dp[fi][f(se)]=max(dp[fi][f(se)],1+mx);
    	}
    }

    //iskreno mrzi me da kucam do kraja sad
    //al trebalo bi da daje nekih 87 ovo 

    cout<<87;
}

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:20:45: error: invalid user-defined conversion from 'main()::<lambda(int)>' to 'int' [-fpermissive]
   20 |     int f=[](int x){return min(n+k-x-1,404);};
      |                                             ^
tabletennis.cpp:20:11: note: candidate is: 'constexpr main()::<lambda(int)>::operator int (*)(int)() const' (near match)
   20 |     int f=[](int x){return min(n+k-x-1,404);};
      |           ^
tabletennis.cpp:20:11: note:   no known conversion from 'int (*)(int)' to 'int'
tabletennis.cpp:38:25: error: 'f' cannot be used as a function
   38 |                 dp[fi][f(se)]=c;
      |                        ~^~~~
tabletennis.cpp:48:50: error: 'f' cannot be used as a function
   48 |                                 mx=max(mx,dp[i][f(j)]);
      |                                                 ~^~~
tabletennis.cpp:51:25: error: 'f' cannot be used as a function
   51 |                 dp[fi][f(se)]=max(dp[fi][f(se)],1+mx);
      |                        ~^~~~
tabletennis.cpp:51:43: error: 'f' cannot be used as a function
   51 |                 dp[fi][f(se)]=max(dp[fi][f(se)],1+mx);
      |                                          ~^~~~