include <iostream>

include <math.h>

include <algorithm>

include <climits>

include <queue>

include <vector>

include <stack>

include <string>

include <iomanip>

include <tuple>

include <set>

include <map>

using namespace std;

define int long long

const int MAXN = 300005;
int a[MAXN];
int s;
int n;

void solve(){
cin >> n >> s;
for(int i = 1 ; i <= n ;i++){
cin >> a[i];
}
int i = 1;
int j = n ;
while(i <= j){
if(a[i] + a[j] < s){
i++;
}else if(a[i] + a[j] > s){
j--;
}else if(a[i]+a[j] == s){
cout << i << " " << j << endl;
return;
}
}
cout << "No solution" << endl;
return;

}

signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0), cout.tie(0);
int t=1;
// cin >> t;
while(t--){
solve();
}
return 0;
}