Card game

input/code.cpp: In function 'int dynamic(const std::vector<int>&)':
input/code.cpp:17:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for(int i=3; i< sol.size(); i++){
      |                  ~^~~~~~~~~~~~

#include <iostream>
#include <vector>

using namespace std;

int max(int a, int b){
    if(a>b) return a;
    return b;
}
int dynamic(const vector<int>& vals){
    if(vals.size()<3)return 0;
    vector<int> sol(vals.size());
    sol[0]=0;
    sol[1]=0;
    sol[2]=vals[1];

    for(int i=3; i< sol.size(); i++){
        sol[i] = max(sol[i-1], sol[i-3]+vals[i-1]);
    }
    return sol[sol.size()-1];
}
int main(){
    int n; 
    cin >> n;
    vector<int> vals(n);

    for(int i=0 ; i<n; i++){
        cin >> vals[i];
    }
    cout<<dynamic(vals)<<endl;
}

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