#include <bits/stdc++.h> // author: aykhn using namespace std; typedef long long ll; #define TC int t; cin >> t; while (t--) _(); #define OPT ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); #define all(v) v.begin(), v.end() #define pii pair<int, int> #define mpr make_pair #define eb emplace_back #define pb push_back #define ts to_string #define fi first #define se second #define ins insert #define int ll #define inf 0x3F3F3F3F #define infll 0x3F3F3F3F3F3F3F3FLL #define bpc __builtin_popcount bool ok(int val, int x) { while (val) { if (val % 10 == x) return true; val /= 10; } return false; } signed main() { OPT; int n; cin >> n; vector<int> v(n, 0); for (int i = 0; i < n; i++) cin >> v[i]; string s = ts(n); if (v[0] == 0) s = "10" + s; else s = ts(v[0]) + s; for (int i = 1; i < s.length(); i++) { s[i] = '0'; } cout << s << endl; }

sequence.cpp: In function 'int main()':
sequence.cpp:50:23: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for (int i = 1; i < s.length(); i++)
      |                     ~~^~~~~~~~~~~~