Submission #818596

#	Time	Username	Problem	Language	Result	Execution time	Memory
818596		vjudge1	Crossing (JOI21_crossing)	C++17	26 / 100	7009 ms	6836 KiB

Main

#include<bits/stdc++.h>

using namespace std;
using ll = long long;

int n;
string T = "JOI";

string get(string a, string b) {
    string res;
    for(int i = 0; i < n; i++)
        if(a[i] == b[i]) res += a[i];
        else {
            int k = 0;
            while(T[k] == a[i] || T[k] == b[i]) k++;
            res += T[k];
        }
    return res;
}
vector<string> st;
bool check(string s) {
    for(string cur : st)
        if(cur == s) return 1;
    return 0;
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin >> n;
    string s[3];
    cin >> s[0] >> s[1] >> s[2];
    st.push_back(s[0]);
    st.push_back(s[1]);
    st.push_back(s[2]);
    st.push_back(get(s[0], s[1]));
    st.push_back(get(s[0], s[2]));
    st.push_back(get(s[1], s[2]));
    st.push_back(get(s[0], get(s[1], s[2])));
    st.push_back(get(s[0], get(s[2], s[1])));
    st.push_back(get(s[1], get(s[0], s[2])));
    st.push_back(get(s[1], get(s[2], s[0])));
    st.push_back(get(s[2], get(s[0], s[1])));
    st.push_back(get(s[2], get(s[1], s[0])));

    int q;
    cin >> q;
    string t;
    cin >> t;
    cout << (check(t) ? "Yes\n" : "No\n");
    while(q--) {
        int l, r; char x;
        cin >> l >> r >> x;
        for(int i = l - 1; i < r; i++) 
            t[i] = x;
        cout << (check(t) ? "Yes\n" : "No\n");
    }
}

• Subtask 1: 3 / 3
• Subtask 2: 0 / 23
• Subtask 3: 23 / 23
• Subtask 4: 0 / 51