제출 #682310

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
682310		vjudge1	Building 4 (JOI20_building4)	C++17	0 / 100	1 ms	340 KiB

building4

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;

#pragma GCC optimization("g", on)
#pragma GCC optimization("03")
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse,-fgcse-lm")
#pragma GCC optimize("-ftree-pre,-ftree-vrp")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("Ofast,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#pragma GCC optimize("unroll-loops")

#define aboba ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define br break;
#define sp " "
#define en "\n"
#define pb push_back
#define sz size()
#define bg begin()
#define ed end()
#define in insert
#define ss second
#define ff first
#define rbg rbegin()
#define setp(a) cout << fixed; cout << setprecision(a);
#define all(v) v.begin(), v.end()
 
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef double db;
typedef tree<
    long long,
    null_type,
    less_equal<long long>,
    rb_tree_tag,
    tree_order_statistics_node_update> orset;

void freopen(string s) { freopen((s + ".in").c_str(), "r", stdin); freopen((s + ".out").c_str(), "w", stdout); }
ll bp(ll x, ll y, ll z) { ll res = 1; while (y) { if (y & 1) { res = (res * x) % z; y--; } x = (x * x) % z; y >>= 1; } return res; }
// C(n, k) = ((fact[n] * bp(fact[k], mod - 2)) % mod * bp(fact[n - k], mod - 2)) % mod;
ll lcm(ll a, ll b) { return (a / __gcd(a, b)) * b; }

const ll N = 1e6 + 11;
const ll inf = 1e9 + 7;
ll tt = 1; 
ll a[N], b[N], p[N];

void solve() {
	ll n; cin >> n;
	n *= 2;
	for (int i = 1;i <= n;i++) cin >> a[i];
	for (int i = 1;i <= n;i++) cin >> b[i];
	for (int i = 0;i < (1 << n);i++) {
		if (__builtin_popcount(i) != n / 2) continue;
		string s = "";
		ll last = -1;
		bool f = 0;
		for (int j = 0;j < n;j++) {
			if (i & (1 << j)) {
				if (a[j + 1] < last) {
					f = 1;
					br;
				}
				last = a[j + 1];
				s += 'A';
			} else {
				if (b[j + 1] < last) {
					f = 1;
					br;
				}
				last = b[j + 1];
				s += 'B';
			}
		}
		if (!f) {
			cout << s << en;
			return;
		}
	}
	cout << -1 << en;
}

int main() {    
    aboba  
    //freopen("numbers");
    //freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout);
    //cin >> tt;
    for (int i = 1;i <= tt;i++) {
        solve();
    }
}

컴파일 시 표준 에러 (stderr) 메시지

building4.cpp:7: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    7 | #pragma GCC optimization("g", on)
      | 
building4.cpp:8: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    8 | #pragma GCC optimization("03")
      | 
building4.cpp:9: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    9 | #pragma comment(linker, "/stack:200000000")
      | 
building4.cpp: In function 'void freopen(std::string)':
building4.cpp:48:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 | void freopen(string s) { freopen((s + ".in").c_str(), "r", stdin); freopen((s + ".out").c_str(), "w", stdout); }
      |                          ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
building4.cpp:48:75: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 | void freopen(string s) { freopen((s + ".in").c_str(), "r", stdin); freopen((s + ".out").c_str(), "w", stdout); }
      |                                                                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 89