Submission #51892

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
51892	2018-06-22 12:13:49	Alexa2001	Circle selection (APIO18_circle_selection)	C++17	100 / 100	1816 ms	524636 KiB

circle_selection

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <bits/stdc++.h>
/// 13:07
using namespace std;
typedef pair<int,int> Pair;
typedef long long ll;
const int Nmax = 3e5 + 5;
int n, i, id, R, lg;
int x[Nmax], y[Nmax], r[Nmax], ans[Nmax];
Pair ord[Nmax];
vector< vector<Pair> > v;
vector<int> start;
void rescale()
{
    int i;
    vector< vector<Pair> > nv;
    vector<Pair> q[2];
    for(auto w : v)
    {
        for(i=0; i<2; ++i) q[i].clear();
        for(auto val : w)
            if(!ans[val.second])
                q[(x[val.second] >> lg) & 1].push_back(val);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

circle_selection.cpp: In function 'void rescale()':
circle_selection.cpp:38:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0; i<v.size(); ++i)
              ~^~~~~~~~~
circle_selection.cpp: In function 'int bs(int)':
circle_selection.cpp:52:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(; (1<<bit) < start.size(); ++bit);
           ~~~~~~~~~^~~~~~~~~~~~~~
circle_selection.cpp:55:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(pos + (1<<bit) < start.size() && start[pos + (1<<bit)] < val)
            ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
circle_selection.cpp: In function 'void update_ans(int)':
circle_selection.cpp:82:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(pos = max(0, bs(X) - 2); pos < start.size() && start[pos] <= X + 2; ++pos)
                                  ~~~~^~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 15 / 15
• Subtask 4: 23 / 23
• Subtask 5: 30 / 30
• Subtask 6: 13 / 13