Submission #419575

#	Time	Username	Problem	Language	Result	Execution time	Memory
419575		zaneyu	Crossing (JOI21_crossing)	C++14	26 / 100	7044 ms	4356 KiB

Main

/*input
3
JOI
JOI
JOI
2
OJI
1 2 O
1 1 J
*/
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
#pragma GCC optimize("Ofast")
//order_of_key #of elements less than x
// find_by_order kth element
typedef long long int ll;
#define ld double
#define pii pair<ll,ll>
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (ll)x.size()
const ll maxn=1e6+5;
const ll maxlg=__lg(maxn)+2;
const ll INF64=4e17;
const int INF=0x3f3f3f3f;
const ll MOD=1e9+7;
const ld PI=acos(-1);
const ld eps=1e-4;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
ll mult(ll a,ll b){
	return (a*b)%MOD;
}
ll mypow(ll a,ll b){
	ll res=1;
	while(b){
		if(b&1) res=mult(res,a);
		a=mult(a,a);
		b/=2;
	}
	return res;
}
string arr[3];
string bl="JOI";
string op(string a,string b){
	string ans="";
	REP(i,sz(a)){
		if(a[i]==b[i]) ans.pb(a[i]);
		else{
			REP(k,3){
				if(bl[k]!=a[i] and bl[k]!=b[i]) ans.pb(bl[k]);
			}
		}
	}
	return ans;
}
int main(){
	ios::sync_with_stdio(false),cin.tie(0);
	int n;
	cin>>n;
	REP(i,3) cin>>arr[i];
	vector<string> v;
	REP(i,3){
		v.pb(arr[i]);
		REP(j,i){
			v.pb(op(arr[i],arr[j]));
		}
	}
	vector<int> b;
	REP(i,3) b.pb(i);
	do{
		string cur="";
		for(auto x:b){
			if(!sz(cur)) cur=arr[x];
			else cur=op(cur,arr[x]);
		}
		v.pb(cur);
	}while(next_permutation(ALL(b)));
	int q;
	cin>>q;
	string s;
	cin>>s;
	bool hv=0;
	for(auto x:v){
		if(x==s){
			cout<<"Yes\n";
			hv=1;
			break;
		}
	}
	if(!hv) cout<<"No\n";
	while(q--){
		int l,r;
		char c;
		cin>>l>>r>>c;
		--l,--r;
		for(int i=l;i<=r;i++) s[i]=c;
		bool hv=0;
		for(auto x:v){
			if(x==s){
				cout<<"Yes\n";
				hv=1;
				break;
			}
		}
		if(!hv) cout<<"No\n";
	}
}

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