For this Question: Given an integer S represented as a string, the task is to get the sum of all possible sub-strings of this string.The only line of input contains a single integers S represented as a string.

1 <= len(S) <= 1000000Print the required sum modulo (10^9 + 7)Sample Input 1:
1234

Sample Output 1:
1670

Explanation:
Sum = 1 + 2 + 3 + 4 + 12 + 23 + 34 + 123 + 234 + 1234
 = 1670

Sample Input 2:
421

Sample Output 2:
491

Explanation:
Sum = 4 + 2 + 1 + 42 + 21 + 421
 = 491, I have written this Solution Code: #include "bits/stdc++.h"
using namespace std;
 
#define int long long int
#define ld long double
#define pi pair<int, int>
#define pb push_back
#define fi first
#define se second
#define IOS ios::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#ifndef LOCAL
#define endl '\n'
#endif

const int N = 2e6 + 5;
const int mod = 1e9 + 7;
const int inf = 1e9 + 9;


void solve(){
	string s;
	cin >> s;
	int ans = 0, suf = 0;
	for(int i = 0; i < (int)s.length(); i++){
		suf = (suf*10 + (s[i]-'0')*(i+1)) % mod;
		ans = (ans + suf) % mod;
	}
	cout << ans << endl;
}

void testcases(){
	int tt = 1; 
	//cin >> tt;
	while(tt--){
		solve();
	}
}

signed main() {
	IOS;
		clock_t start = clock();

	testcases();

	cerr << (double)(clock() - start)*1000/CLOCKS_PER_SEC << " ms" << endl;
	return 0;
}	, In this Programming Language: C++, Now tell me if this Code is compilable or not?