Submission #401506

#	Time	Username	Problem	Language	Result	Execution time	Memory
401506		Berted	Floppy (RMI20_floppy)	C++14	100 / 100	115 ms	13020 KiB

floppy

#include <stdlib.h>
#include <string.h>
#include <algorithm>
#include <iostream>

#include "floppy.h"
#define pii pair<int, int>
#define ppi pair<pii, int>
#define fst first
#define snd second

using namespace std;


void read_array(int subtask_id, const vector<int> &v) 
{
	vector<int> S;
	string ret = "";
    for (const auto &u : v)
    {
    	while (S.size() && S.back() <= u) {S.pop_back(); ret.push_back('0');}
    	S.push_back(u);
    	ret.push_back('1');
    }
    save_to_floppy(ret);
}

vector<int> solve_queries(int subtask_id, int N, const string &bits, const vector<int> &a, const vector<int> &b) 
{
	//cerr << "S: " << bits << "\n";
    vector<int> ret(a.size(), 0), S; vector<ppi> qry;
    for (int i = 0; i < a.size(); i++) qry.push_back({{b[i], a[i]}, i});
    sort(qry.begin(), qry.end());
    int j = 0, k = 0;
	for (const auto &u : qry)
	{
		for (; j <= u.fst.fst; j++)
		{
			for (; k < bits.size() && bits[k] == '0'; k++) {S.pop_back();}
			S.push_back(j); k++;
		}
		ret[u.snd] = *lower_bound(S.begin(), S.end(), u.fst.snd);
		//cerr << u.snd << " " << ret[u.snd] << "\n";
	}
    return ret;
}

Compilation message (stderr)

floppy.cpp: In function 'std::vector<int> solve_queries(int, int, const string&, const std::vector<int>&, const std::vector<int>&)':
floppy.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for (int i = 0; i < a.size(); i++) qry.push_back({{b[i], a[i]}, i});
      |                     ~~^~~~~~~~~~
floppy.cpp:39:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |    for (; k < bits.size() && bits[k] == '0'; k++) {S.pop_back();}
      |           ~~^~~~~~~~~~~~~
stub.cpp: In function 'void run2()':
stub.cpp:101:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  101 |     if (query_answers.size() != M) {
      |         ~~~~~~~~~~~~~~~~~~~~~^~~~

• Subtask 1: 7 / 7
• Subtask 2: 21 / 21
• Subtask 3: 72 / 72