Submission #660490

#	Time	Username	Problem	Language	Result	Execution time	Memory
660490		angelo_torres	Password (RMI18_password)	C++17	30 / 100	69 ms	208 KiB

password

#include <bits/stdc++.h>
#define sz(v) (int) v.size()
#define ff first
#define ss second

using namespace std;
typedef pair<int,int> ii;

int cn[26];
vector<int> a[26];
vector<ii> rn = {{0,7},{8,16},{17,25}};
deque<pair<int,char>> gr[3];
char ans[5005];

int query(string q);
// int query(string s){
// 	cout << s << endl;
// 	int tr; cin >> tr;
// 	return tr;
// }

string guess(int n,int s){
	// [0,7] 
	// [8,16]
	// [17,25]
	for(auto [l,r] : rn){
		for(int i = l; i <= r; ++i){
			for(int j = l; j <= r; ++j){
				if(i == j or i >= s or j >= s) continue;
				char x = (char) ('a'+i), y = (char) ('a'+j);
				string tr = "";
				for(int k = 1; k <= n; ++k) tr.push_back(y);
				for(int k = 1; k <= n; ++k){
					tr[k-1] = x;
					int vl = query(tr);
					if(vl < k) break;
					if(sz(a[i]) < k) a[i].push_back(vl-k);
					else a[i][k-1] += (vl-k);
				}
			}
		}
	}
	for(int i = 0; i < 26; ++i) cn[i] = sz(a[i]);
	for(int i = 0; i < 26; ++i){
		for(int j = 0; j < sz(a[i]); ++j) a[i][j] += (sz(a[i])-j-1);
	}
	for(int i = 0; i < 3; ++i){
		int l = rn[i].ff, r = rn[i].ss;
		for(int j = l; j <= r; ++j){
			for(auto it : a[j]) gr[i].push_back({it,((char) ('a'+j))});
		}
		sort(gr[i].rbegin(),gr[i].rend());
		// for(auto it : gr[i]) cout << it.ff << " " << it.ss << " ";
		// cout << endl;
	} 
	for(int i = n; i >= 1; --i){
		vector<int> po;
		for(int j = 0; j < 3; ++j){
			if(sz(gr[j]) > 0 && gr[j].back().ff == n-i) po.push_back(j);
		}
		int rp = -1;
		if(sz(po) == 1) rp = po[0];
		if(sz(po) == 2){
			int i1 = po[0], i2 = po[1];
			string ft = "";
			for(auto it : gr[i1]) ft.push_back(it.ss);
			ft.push_back(gr[i2].back().ss);
			int vl = query(ft);
			if(vl == sz(ft)) rp = i2;
			else rp = i1;
		}
		if(sz(po) == 3){
			int i1 = po[0], i2 = po[1], i3 = po[2];
			string ft = "";
			for(auto it : gr[i1]) ft.push_back(it.ss);
			ft.push_back(gr[i2].back().ss);
			int vl = query(ft);
			if(vl == sz(ft)) rp = i2;
			else rp = i1;
			ft = "";
			for(auto it : gr[rp]) ft.push_back(it.ss);
			ft.push_back(gr[i3].back().ss);
			vl = query(ft);
			if(vl == sz(ft)) rp = i3;
		}
		ans[i] = gr[rp].back().ss;
		gr[rp].pop_back();
		for(int i = 0; i < 3; ++i){
			if(i == rp) continue;
			for(auto &it : gr[i]) it.ff++;
		} 
	}
	string tt = "";
	for(int i = 1; i <= n; ++i) tt.push_back(ans[i]);
	return tt;
}

// int main(){
// 	int n,s; cin >> n >> s;
// 	cout << guess(n,s) << endl;
// 	return 0;
// }

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 30
• Subtask 5: 0 / 20