Submission #1305960

#	Time	Username	Problem	Language	Result	Execution time	Memory
1305960		limon4ick	Snake Escaping (JOI18_snake_escaping)	C++20	5 / 100	2071 ms	58920 KiB

snake_escaping

/*#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3") 
#pragma GCC optimize("Ofast") 
#pragma GCC target("avx,avx2,fma") 
#pragma GCC optimization("unroll-loops") 
#pragma ("reroll") */
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pb push_back
#define ins insert
#define F first
#define S second
const int mod = 1e7 + 7,N = 5010,inf = 1e18;
signed main(){
    //freopen("snnfsn.in","r",stdin)
    //freopen("snnfsn.out","w",stdout)
    std::ios::sync_with_stdio(false);
    cin.tie(0);
    int n,q;
    cin >> n >> q;
    string s;
    cin >> s;
    while(q--){
        string t;
        cin >> t;
        set<int>st;
        int ans = 0;
        for(int i = 0;i<(1 << n);i++) st.ins(i);
        for(int j = 0;j<t.size();j++){
            if(t[j]=='?') continue;
            bool ok = (t[j]=='0');
            vector<int>v;
            for(auto x:st){
                if((x>>(n-j-1))&1 && ok) v.pb(x);
                if(!((x>>(n-j-1))&1) && !ok) v.pb(x);
            }
            for(auto x:v) st.erase(x);
        }
        for(auto x:st){
            ans+=(s[x] - '0');
        }
        cout << ans << '\n';
    }
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 10
• Subtask 4: 0 / 53
• Subtask 5: 0 / 25