#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define pll pair<ll,ll>
using namespace std;
int main()
{
ll n, m,cnt=0;
cin >> n >> m;
vector<ll> v[n];
queue<pll> q;
for(ll i=0;i<n;i++)
{
v[i].resize(m);
for(ll j=0;j<m;j++)
{
cin >> v[i][j];
}
}
for(ll i=0;i<n;i++)
{
for(ll j=0;j<m;j++)
{
if(v[i][j]==0)
{
cnt++;
}
}
}
return 0;
}
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