Submission #645651

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
645651	2022-09-27 15:16:44	czhang2718	Permutation (APIO22_perm)	C++17	100 / 100	3 ms	356 KiB

perm

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"
using namespace std;
 
// #include "perm.h"
 
std::vector<int> construct_permutation(long long S)
{
    vector<int> v;
    bool emp=1;
    int t=0;
    for(int i=30; i>=0; i--){
        int d=(S/(1LL<<(2*i)))%4;
        if(emp){
            if(!d) continue;
            if(d==1) {}
            if(d==2) v={0};
            if(d==3) v={1,0};
            emp=0;
            continue;
        }
        int mx=(v.size()?*max_element(v.begin(), v.end()):0);
        int mn=(v.size()?*min_element(v.begin(), v.end()):0);
        if(d==0){
            v.push_back(mx+1);
            v.push_back(mx+2);
        }
        if(d==1){
            v.push_back(mx+1);
            v.push_back(mx+2);
            v.push_back(mn-1);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:39:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |             for(int j=0; j<v.size(); j++){
      |                          ~^~~~~~~~~
perm.cpp:10:9: warning: unused variable 't' [-Wunused-variable]
   10 |     int t=0;
      |         ^

• Subtask 1: 10 / 10
• Subtask 2: 90 / 90