Submission #1018113

#	Time	Username	Problem	Language	Result	Execution time	Memory
1018113		NintsiChkhaidze	Last supper (IOI12_supper)	C++17	100 / 100	90 ms	61280 KiB

advisor

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

const int MM = 2e6 + 5;

vector <int> st[MM];
bool onn[MM],val[MM],valk[MM];
bool fix[MM];

void ComputeAdvice(int *C, int N, int K, int M) {
	int n=N,k=K;
	for (int i=N-1;i>=0;i--){
		st[C[i]].pb(i);
	}
	
	set <pair<int,int> > stt;
	for (int i=0;i<K;i++){
		onn[i] = 1;
		int val = 0;
		if (!st[i].size()) val=1e9;
		else val=st[i].back();
		stt.insert({val,i});
	}
	
	int i;
	vector <int> vec;
	for (i = 0; i < N; i++) {
    	int req = C[i];
    	if (onn[req]) {
    		vec.pb(-1);
    		int val = 0;
			if (!st[req].size()) val=1e9;
			else val=st[req].back();
			stt.erase(stt.find({val,req}));
			
			while (st[req].size() && st[req].back() <= i){
    			st[req].pop_back();
			}
			val = 0;
			if (!st[req].size()) val=1e9;
			else val=st[req].back();
			stt.insert({val,req});
			continue;
		}
    	
		int idx=(--stt.end())->second; stt.erase(--stt.end());
		vec.pb(idx);
		onn[idx] = 0;
		onn[req] = 1;
		
		while (st[req].size() && st[req].back() <= i){
    		st[req].pop_back();
		}
		
		int val = 0;
		if (!st[req].size()) val=1e9;
		else val=st[req].back();
		stt.insert({val,req});
  	}
  	
	for (int i = n - 1; i >= 0; i--){
		val[i] = (!fix[C[i]]);
		fix[C[i]] = 1;
		fix[vec[i]] = 0;
	}
	
	for (int i=k-1;i>=0;i--){
		if (!fix[i]) valk[i] = 1;
	}
	
	for (int i=0;i<k;i++)
		WriteAdvice(valk[i]);
	for (int i=0;i<n;i++)
		WriteAdvice(val[i]);
}

assistant

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

int CC[2000005];
bool on[2000005];
int vall[2000005],vallk[2000005];

void Assist(unsigned char *A, int N, int K, int R) {
	int n=N;
	int k=K;
	
	for (int i = 0; i < k; i++)
		vallk[i] = A[i];
	for (int i=0;i<n;i++)
		vall[i] = A[i+k];
	
	vector <int> t2;
	for (int i=0;i<k;i++){
		if (!vallk[i]) on[i] = 1;
		else t2.pb(i);
	}
	
	int i;
	int l = 0;
	for (i = 0; i < N; i++) {
    	int req = GetRequest();
    	if (on[req]){
    		if (!vall[i]) continue;
    		on[req] = 0;
    		t2.pb(req);
    		continue;
		}
		
		PutBack(t2.back());
		t2.pop_back();
		
		if (!vall[i]){
			on[req] = 1;
		}else{
			t2.pb(req);
		}
  	}
}

Compilation message (stderr)

assistant.cpp: In function 'void Assist(unsigned char*, int, int, int)':
assistant.cpp:26:6: warning: unused variable 'l' [-Wunused-variable]
   26 |  int l = 0;
      |      ^

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 35 / 35
• Subtask 5: 39 / 39