#include<bits/stdc++.h>
#define X first
#define Y second
#define FOR(i, a, b) for (int i = (a); i <= (b); i++)
#define REP(i, a, b) for (int i = (a); i < (b); i++)
#define FORD(i, b, a) for (int i = (b); i >= (a); i--)
#define all(x) begin(x), end(x)
#define MASK(x) (1LL << (x))
#define SQR(x) (1LL * (x) * (x))
using namespace std;
typedef long long ll;
typedef long double ld;
typedef double db;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
typedef pair<ll, ll> pll;
typedef pair<ll, pll> plll;
typedef pair<ll, int> pli;
template<class A, class B>
bool maximize(A& x, B y) {
if (x < y) return x = y, true; else return false;
}
template<class A, class B>
bool minimize(A& x, B y) {
if (x > y) return x = y, true; else return false;
}
/* END OF TEMPLATE */
void encode(int n, int m[]) {
int res = 0;
REP(i, 0, n) res = res + MASK(i) * m[i];
cout<<res;
// send(res);
}
Compilation message
/usr/bin/ld: /tmp/ccJU7G2g.o: in function `main':
grader_decoder.cpp:(.text.startup+0x1ef): undefined reference to `decode(int, int, int*)'
collect2: error: ld returned 1 exit status
