#include <iostream>
#include <vector>
using namespace std;
void twonum(const vector<int> & rvec, const int & tar)
{
int temptar = tar;
int prevInd = 0;
int turn = 1;
for(int ind =0; ind < rvec.size(); ind++)
{
if(temptar-rvec[ind] == 0 && turn == 0)
{
cout<<"the two indices are "<<prevInd <<", "<<ind<<endl;
return;
}
else
{
turn = 1;
temptar = tar;
}
if(temptar-rvec[ind] > 0 && turn == 1)
{
temptar = temptar - rvec[ind];
prevInd = ind;
turn--;
}
}
cout<<"Target doesn't exist"<<endl;
}
int main() {
int target = 0;
cin>> target;
vector<int> vec{1,6,7,3,6,8,2,9};
twonum(vec, target);
return 0;
}
