Task: | Alkuluvut |
Sender: | tykkipeli |
Submission time: | 2025-09-27 21:44:44 +0300 |
Language: | C++ (C++20) |
Status: | COMPILE ERROR |
Compiler report
input/code.cpp: In function 'bool brute(std::vector<long long int>&, ll)': input/code.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int i = 0; i < q.size(); i++) { | ~~^~~~~~~~~~ input/code.cpp: In function 'void testCase()': input/code.cpp:61:30: error: expected ';' before string constant 61 | if (!brute(v, base)) cout "NO\n"; | ^~~~~~~ | ; input/code.cpp:61:26: warning: statement has no effect [-Wunused-value] 61 | if (!brute(v, base)) cout "NO\n"; | ^~~~
Code
#include <bits/stdc++.h> using namespace std; typedef long long ll; bool is_prime(ll x) { for (ll i = 2; i*i < x; i++) { if (x%i == 0) return false; } return true; } bool brute(vector<ll> &v, ll base) { vector<ll> q; q.push_back(base); for (int i = 0; i < q.size(); i++) { base = q[i]; for (ll x : v) { ll newbase = base * 10; newbase += x; if (newbase > (ll) 1e16) continue; if (is_prime(newbase)) { cout << "YES\n"; cout << newbase << "\n"; return true; } q.push_back(newbase); } } return false; } void testCase() { int k; cin >> k; vector<ll> v; bool fine = false; bool fine2 = false; for (int i = 0; i < k; i++) { int d; cin >> d; if (d%3 != 0) fine = true; if (d%2 != 0 && d != 5) fine2 = true; v.push_back(d); } if (!fine || !fine2) { cout << "NO\n"; return; } ll base = 0; bool haszero = false; for (ll x : v) { if (x == 0) { haszero = true; } else { base *= 10; base += x; } } if (haszero) base *= 10; if (!brute(v, base)) cout "NO\n"; } int main(){ ios::sync_with_stdio(false); cin.tie(0); int t; cin >> t; for (int i = 0; i < t; i++) { testCase(); } }