Card game

#include <iostream>
#include <vector>

using std::cout;
using std::endl;
#define DEBUG std::cout<<"LINE"<<__LINE__;
#define IN(A) int A;std::cin>>A;

template<typename T> T printV(std::vector<T> V) {
    for (int i=0;i<V.size-1;i++) {
        std::cout<<V[i]<<" ";
    }
    std::cout<<V[V.size-1];
    std::cout<<endl;
}
int64_t max3(int64_t a,int64_t b,int64_t c) {
    return std::max(a,std::max(b,c));
}


struct compute {
    std::vector<int> data;
    std::vector<int64_t> memo;
    bool start() {
        IN(n);
        data.assign(n,0);
        memo.assign(n,0);
        readV(n);
        int last=data.size()-2;
        for (int i=0;i<last;i++) {
            solve(i);
        }
        int64_t value=0;
        for (int i=last;i>=0&&i>=last-3;i--) {
            value=std::max(memo[i],value);
        }
        std::cout<<value;
        return true;
    }

    int64_t solve(int n) {
        if (n<0) {
            return 0;
        }
        if (memo[n]) {
            return memo[n];
        }
        auto var=data[n+1];
        memo[n]=max3(solve(n-5)+var,solve(n-4)+var,solve(n-3)+var);
        return memo[n];
    }
    void readV(int n) {
          for (int i=0;i<n;i++) std::cin>>data[i];

    }

};

int main() {
    compute comp;
    comp.start();


}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED