제출 #389959

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
389959		abc864197532	Binary Subsequences (info1cup17_binary)	C++17	43 / 100	9 ms	588 KiB

binary

#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define test(x) cout << #x << ' ' << x << endl
#define printv(x) { \
    for (auto a : x) cout << a << ' '; \
    cout << endl; \
}
#define pii pair<int, int>
#define pll pair<lli, lli>
#define X first
#define Y second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
const int N = 512, abc = 864197532;

string ans[] = {"-1", "0",
"00",
"10",
"0000",
"100",
"010",
"1000",
"1100",
"0100",
"0110",
"1010",
"01000",
"00100",
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"01100",
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"101010101001100",
"101011001010010",
"101001001101010",
"101011010110010",
"0110001101101100",
"1011011001101000",
"1001100101001000",
"0010010110101000",
"1101101100100100",
"0101001001001000",
"1100110010101000",
"101001101010010",
"0010010101101000",
"100101001010110",
"101001010110010",
"101010011010010",
"1010101011010000",
"101010010110010",
"1001010011001000",
"0110011001011000",
"0010101101101000",
"011101010101010",
"1001001011000100",
"100110110101010",
"101001010011010",
"0100100101001000",
"1001101011001000",
"1011001101000100",
"0010100010100100",
"101001101001010",
"101001011001010",
"100100110101010",
"1100010101100100",
"100110101010010",
"1001011011100100",
"1101010110011000",
"1001010001100010",
"1100100111010100",
"0101001001000100",
"0100100100101000",
"1010011011101100",
"100101010110010",
"010101010100100",
"100110101101010",
"1001001110110100",
"100110101001010",
"1010110011001000",
"0101010001011000",
"0110101010111100",
"100101001101010",
"100110101011010",
"100101011001010",
"1011110101010100",
"0010110101101000",
"100110100101010",
"100101010011010",
"0101101001001000",
"0101010110111000",
"1100101110010100",
"100101100101010",
"1100101010011000",
"0101101101001000",
"0010101110100100",
"010010101010100",
"1011010011011000",
"101010100110010",
"0100100101000100",
"0011010101001000",
"1010101010001000",
"0010011010101000",
"1011001100101000",
"010101010010100",
"0100100100010100",
"1010111101010100",
"010100101010100",
"010101001010100",
"0100010100100100",
"010101101010100",
"010101011010100",
"100101010100110",
"101001100101010",
"010110101010100",
"0100101010111000",
"1001011001101000",
"0101101101101000",
"1010000101010100",
"1001101101011000",
"0111010101011000",
"1001101001101000",
"010101010110100",
"0101011010111000",
"1011001000110100",
"0011011010101000",
"0010101100101000",
"1001101011101100",
"0010100110101000",
"1100011010110100",
"0010110100010100",
"0101011101110010",
"0110110110101000",
"1011100100110100",
"1010110110011000",
"0111010110100010",
"0010111010110100",
"0100100101101000"
};

int phi(int x) {
    int ans = x;
    for (int i = 2; i * i <= x; ++i) if (x % i == 0) {
        ans -= ans / i;
        while (x % i == 0) x /= i;
    }
    if (x > 1) ans -= ans / x;
    return ans;
}
 
int main () {
    ios::sync_with_stdio(false);
    cin.tie(0);
    /*
    for (int i = 1; i <= 2000; ++i) ans[i] = "-1";
    for (int n = 1; n <= 16; ++n) {
        for (int s = 0; s < 1 << n; ++s) {
            string t;
            for (int j = 0; j < n; ++j) {
                if (s & (1 << j)) t.pb('1');
                else t.pb('0');
            }
            vector <int> dp(n, 0);
            dp[0] = 1;
            for (int i = 1; i < n; ++i) {
                int j;
                for (j = i - 1; j >= 0; --j) {
                    if (t[i] == t[j]) break;
                }
                if (j == -1) dp[i]++, j++;
                while (j < i) dp[i] += dp[j++];
            }
            int sum = accumulate(all(dp), 0);
            if (sum <= 2000 && ans[sum] == "-1") ans[sum] = t;
        }
    }
    cout << "{ ";
    for (int i = 1; i <= 2000; ++i) {
        cout << "\"" << ans[i] << "\",\n";
    }
    cout << "}\n";
    */
    int t;
    cin >> t;
    while (t--) {
        int x;
        cin >> x;
        string s = ans[x];
        cout << phi(x + 2) << endl;
        for (int i = 0; i < s.length(); ++i) cout << s[i] << ' ';
        cout << endl;
    }
}

컴파일 시 표준 에러 (stderr) 메시지

binary.cpp: In function 'int main()':
binary.cpp:2071:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
 2071 |         for (int i = 0; i < s.length(); ++i) cout << s[i] << ' ';
      |                         ~~^~~~~~~~~~~~

• Subtask 1: 43 / 43
• Subtask 2: 0 / 39
• Subtask 3: 0 / 18