Submission #233364

#	Time	Username	Problem	Language	Result	Execution time	Memory
233364		Vimmer	Ljetopica (COI19_ljetopica)	C++14	8 / 100	5 ms	384 KiB

ljetopica

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")

#define sz(x) ll(x.size())
#define base 1000000
#define M ll(1e9+7)
#define F first
#define S second
#define pb push_back
#define in insert
#define eb emplace_back
#define ed "\n"

using namespace std;
//using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef short int si;

//typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;




int more(string s, string t)
{
    if (sz(s) > sz(t)) return 1;

    if (sz(s) < sz(t)) return 0;

    for (int i = 0; i < sz(s); i++)
    {
        if (s[i] == t[i]) continue;

        if (s[i] == '1') return 1;

        return 0;
    }

    return 2;
}

int main()
{
//    freopen("input.txt","r",stdin); freopen("output.txt","w",stdout);

    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    ll n, k;

    cin >> n >> k;

    ll a = 1, b = 1;

    string s, t1 = "1", t2 = "1";

    cin >> s;

    for (int i = 0; i < sz(s); i++)
    {
        if (s[i] == 'L')
        {
            a *= 2;

            b *= 2;

            b %= M;

            b++;

            a %= M;

            b %= M;

            t1 += '0';

            t2 += '1';
        }
        else
        {
            a *= 2;

            b *= 2;

            a %= M;

            a++;

            a %= M;

            b %= M;

            t1 += '1';

            t2 += '0';
        }
    }

    string s1, s2;

    cin >> s1;

    cin >> s2;

    ll ans = 0;

    if (more(t1, s1) != 0 && more(s2, t1) != 0) ans = a;

    if (more(t2, s1) != 0 && more(s2, t2) != 0) ans = (ans + b) % M;

    cout << ans << endl;
}

• Subtask 1: 8 / 8
• Subtask 2: 0 / 14
• Subtask 3: 0 / 17
• Subtask 4: 0 / 61