Submission #143491

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
143491	2019-08-14 09:56:12	darkkcyan	Snake Escaping (JOI18_snake_escaping)	C++14	100 / 100	1322 ms	53672 KiB

snake_escaping

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#include <bits/stdc++.h>
using namespace std;
using namespace std::placeholders;
#define llong long long 
#define xx first
#define yy second
#define len(x) ((int)x.size())
#define rep(i,n) for (int i = -1; ++ i < n; )
#define rep1(i,n) for (int i = 0; i ++ < n; )
#define all(x) x.begin(), x.end()
// #define rand __rand
// mt19937 rng(chrono::system_clock::now().time_since_epoch().count());  // or mt19937_64
// template<class T = int> T rand(T range = numeric_limits<T>::max()) {
    // return (T)(rng() % range);
// }
struct query_string {
    llong data;
    query_string() {}
    query_string& operator= (const string& s) {
        data = 0;
        for (auto i = s.rbegin(); i != s.rend(); ++i)
            data = data << 2 | (*i == '?' ? 3 : (*i - '0'));
        return *this;
    }
    int operator[](size_t pos) {
        return (data >> pos >> pos) & 3;
    }
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 10 / 10
• Subtask 4: 53 / 53
• Subtask 5: 25 / 25