Submission #1109240

#	Time	Username	Problem	Language	Result	Execution time	Memory
1109240		SalihSahin	Crossing (JOI21_crossing)	C++14	26 / 100	7052 ms	5644 KiB

Main

#include <bits/stdc++.h>
#define pb push_back
#define int long long
using namespace std;

const int mod = 998244353;
const int inf = 1e9 + 20;
const int N = 1e5+5;

string op(string a, string b){
    string res = "";
    for(int i = 0; i < a.size(); i++){
        if(a[i] == b[i]) res += a[i];
        else{
            if(a[i] == 'J'){
                if(b[i] == 'O') res += 'I';
                else res += 'O';
            }
            else if(a[i] == 'O'){
                if(b[i] == 'J') res += 'I';
                else res += 'J';
            }
            else{
                if(b[i] == 'O') res += 'J';
                else res += 'O';
            }
        }
    }

    return res;
}

int32_t main(){
    cin.tie(0); cout.tie(0);
    ios_base::sync_with_stdio(false);
    int n;
    cin>>n;
    vector<string> v;
    set<string> vis;
    for(int i = 0; i < 3; i++){
        string s;
        cin>>s;
        if(vis.find(s) != vis.end()) continue;
        vis.insert(s);
        v.pb(s);
    }

    if(v.size() > 1){
        sort(v.begin(), v.end());
        do{
            string p1 = op(v[0], v[1]);
            if(vis.find(p1) == vis.end()){
                vis.insert(p1);
            }

            if(v.size() >= 3){
                string p2 = op(p1, v[2]);
                if(vis.find(p2) == vis.end()){
                    vis.insert(p2);
                }
            }
        }
        while(next_permutation(v.begin(), v.end()));
    }
    vector<string> can;
    for(auto itr: vis){
        can.pb(itr);
    }

    int q;
    cin>>q;
    string check;
    cin>>check;
    bool ok = 0;
    for(auto itr: can){
        if(itr == check) ok = 1;
    }
    if(ok) cout<<"Yes"<<endl;
    else cout<<"No"<<endl;

    int l, r;
    char c;
    while(q--){
        cin>>l>>r>>c;
        l--, r--;
        ok = 0;

        for(int i = l; i <= r; i++){
            check[i] = c;
        }

        for(auto itr: can){
            if(itr == check) ok = 1;
        }
        if(ok) cout<<"Yes"<<endl;
        else cout<<"No"<<endl;
    }
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'std::string op(std::string, std::string)':
Main.cpp:12:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for(int i = 0; i < a.size(); i++){
      |                    ~~^~~~~~~~~~

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