Dice Summation

input/code.cpp: In function 'int comb_rec_prog(int)':
input/code.cpp:13:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i=0; i<sol.size(); i++){
      |                  ~^~~~~~~~~~~

#include <iostream>
#include <vector>
 
using namespace std;
 
long int m=1000000007;
 
int comb_rec_prog(int n){
    vector<long int> sol(n+1,-1);
 
    sol[0] = 1;
 
    for(int i=0; i<sol.size(); i++){
        if(sol[i]==-1){
            sol[i]=0;
            for(int d=1; d<=6; d++){
                if((i-d) >= 0){
                    
                    sol[i] = (sol[i]+sol[i-d]) % m;
                }
            }
        }
    }
    return sol[n];
 
}
 
int main(){
    int n;
    cin >> n;
 
    cout << comb_rec_prog(n) <<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

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED