#include <bits/stdc++.h>
using namespace std;
long long nzd(long long a, long long b) {
if (b==0) return a;
return nzd(b, a%b);
}
vector<vector<long long> > mat;
void init(int r, int c) {
mat.resize(r, vector<long long> (c, 0));
}
void update(int r, int c, long long br) {
mat[r][c]=br;
}
long long calculate(int x1, int y1, int x2, int y2) {
long long rez=mat[x1][y1];
for (int i=x1;i<=x2;i++)
for (int j=y1;j<=y2;j++)
rez=nzd(rez, mat[i][j]);
return rez;
}
Compilation message
/usr/bin/ld: /tmp/ccZJMGil.o: in function `main':
grader.c:(.text.startup+0x6b): undefined reference to `init'
/usr/bin/ld: grader.c:(.text.startup+0xd0): undefined reference to `calculate'
/usr/bin/ld: grader.c:(.text.startup+0x13e): undefined reference to `update'
collect2: error: ld returned 1 exit status
