Submission #226010

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
226010	2020-04-22 09:51:29	emil_physmath	Segments (IZhO18_segments)	C++17	100 / 100	2089 ms	12028 KiB

segments

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#include <algorithm>
#include <iostream>
#include <stdio.h>
#include <queue>
#include <vector>
#include <set>
using namespace std;
struct Inter { int l, r; };
bool operator<(const Inter& a, const Inter& b) { return a.r - a.l < b.r - b.l; }
const int maxN = 200'000;
const int bl = 1450;
struct
{
    vector<int> ls[maxN / bl], rs[maxN / bl];
    vector<Inter> seg;
    vector<Inter> unProc;
    void add(int l, int r)
    {
        unProc.push_back({l, r});
        if (unProc.size() >= bl)
        {
            // Rebuild.
            vector<Inter> temp; temp.reserve(seg.size() + unProc.size());
            sort(unProc.begin(), unProc.end());
            merge(unProc.begin(), unProc.end(), seg.begin(), seg.end(), back_inserter(temp));
            seg.swap(temp);
            unProc.clear();
            for (int i = 0; i * bl < seg.size(); ++i)
            {
 
 
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Compilation message (stderr)

segments.cpp: In member function 'void<unnamed struct>::add(int, int)':
segments.cpp:29:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int i = 0; i * bl < seg.size(); ++i)
                             ~~~~~~~^~~~~~~~~~~~
segments.cpp:34:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int i = 0; i < seg.size(); ++i)
                             ~~^~~~~~~~~~~~
segments.cpp:39:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int i = 0; i * bl < seg.size(); ++i)
                             ~~~~~~~^~~~~~~~~~~~
segments.cpp: In member function 'int<unnamed struct>::solve(int, int, int)':
segments.cpp:51:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int i = 0; i < seg.size(); i += bl)
                         ~~^~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 15 / 15
• Subtask 3: 16 / 16
• Subtask 4: 17 / 17
• Subtask 5: 20 / 20
• Subtask 6: 25 / 25