Submission #345161

#	Time	Username	Problem	Language	Result	Execution time	Memory
345161		koketsu	"The Lyuboyn" code (IZhO19_lyuboyn)	C++14	100 / 100	116 ms	44068 KiB

lyuboyn

#include <bits/stdc++.h>
#define pb push_back
#define LL long long
#define Kultivator ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

using namespace std;

const LL Mxn = 1e6 + 7;
const LL Mod = 1e9 + 7;
const LL Inf = 1e14 + 7;

int N, K, T, Cnt;

vector <int> tran, Ans;

bool Used[Mxn];

int bom(string S){
    int Ans = 0;
    for(int i = 0; i < S.size(); i++){
        Ans += ((S[i] - '0') << (S.size() - i - 1));
    }
    return Ans;
}

string rev(int V){
    string F = "", t = "";
    while(V > 0){
        F += ((V % 2) + '0');
        V /= 2;
    }
    int P = F.size();
    for(int i = 0; i < N - P; i++){
        F += '0';
    }
    reverse(F.begin(), F.end());
    return F;
}

void Solve(int X){
    Used[X] = true;
    Ans.pb(X);
    Cnt++;
    if(Cnt == (1 << N)){
        cout << Ans.size() << '\n';
        for(int i : Ans){
            cout << rev(i) << '\n';
        }
        exit(0);
    }
    for(int i : tran){
        if(!Used[i ^ X]){
            Solve(i ^ X);
        }
    }
}

int main() {
    Kultivator;
    string S;
    cin >> N >> K >> T >> S;
    if(K % 2 == 0) return cout << -1, 0;
    for(int mask = 0; mask < (1 << N); mask++){
        if(__builtin_popcount(mask) == K){
            tran.pb(mask);
        }
    }
    Solve(bom(S));
    //cout << bom(S);
}

Compilation message (stderr)

lyuboyn.cpp: In function 'int bom(std::string)':
lyuboyn.cpp:20:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for(int i = 0; i < S.size(); i++){
      |                    ~~^~~~~~~~~~

• Subtask 1: 0 / 0
• Subtask 2: 5 / 5
• Subtask 3: 3 / 3
• Subtask 4: 11 / 11
• Subtask 5: 15 / 15
• Subtask 6: 18 / 18
• Subtask 7: 31 / 31
• Subtask 8: 17 / 17