Submission #656542

#	Time	Username	Problem	Language	Result	Execution time	Memory
656542		definitelynotmee	Question (Grader is different from the original contest) (CEOI14_question_grader)	C++98	Compilation error	0 ms	0 KiB

encoder

#include<bits/stdc++.h>
#define mp make_pair
#define mt make_tuple
#define all(x) x.begin(), x.end()
#define ff first
#define ss second
using namespace std;
template <typename T>
using matrix = vector<vector<T>>;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll INFL = (1LL<<62)-1;
const int INF = (1<<30)-1;
const double EPS = 1e-7;
const int MOD = 1e9 + 7;
const int RANDOM = chrono::high_resolution_clock::now().time_since_epoch().count();
const int MAXN = 1e6+1;

int encode (int n, int x, int y) {
    vector<int> v(n+1);
    int id = 1;
    for(uint i = 0; id <= n; i++){
        if(popcount(i) == 6){
            v[id] = i;
            id++;
        }
    }

    for(int i = 0; i < 12; i++){
        if(bool(x&(1<<i)) && !bool(y&(1<<i)))
            return i+1;
    }

}

decoder

#include<bits/stdc++.h>
#define mp make_pair
#define mt make_tuple
#define all(x) x.begin(), x.end()
#define ff first
#define ss second
using namespace std;
template <typename T>
using matrix = vector<vector<T>>;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll INFL = (1LL<<62)-1;
const int INF = (1<<30)-1;
const double EPS = 1e-7;
const int MOD = 1e9 + 7;
const int RANDOM = chrono::high_resolution_clock::now().time_since_epoch().count();
const int MAXN = 1e6+1;

int encode (int n, int x, int y) {
    vector<int> v(n+1);
    int id = 1;
    for(uint i = 0; id <= n; i++){
        if(__builtin_popcount(i) == 6){
            v[id] = i;
            id++;
        }
    }

    for(int i = 0; i < 12; i++){
        if(bool(x&(1<<i)) && !bool(y&(1<<i)))
            return i+1;
    }

}

Compilation message (stderr)

encoder.cpp: In function 'int encode(int, int, int)':
encoder.cpp:26:12: error: 'popcount' was not declared in this scope
   26 |         if(popcount(i) == 6){
      |            ^~~~~~~~
encoder.cpp:23:22: warning: control reaches end of non-void function [-Wreturn-type]
   23 |     vector<int> v(n+1);
      |                      ^

decoder.cpp: In function 'int encode(int, int, int)':
decoder.cpp:23:22: warning: control reaches end of non-void function [-Wreturn-type]
   23 |     vector<int> v(n+1);
      |                      ^
/usr/bin/ld: /tmp/ccivLyDM.o: in function `main':
grader_decode.c:(.text.startup+0x22f): undefined reference to `decode(int, int, int)'
collect2: error: ld returned 1 exit status