Like I want it to be n X m size. How to do it?
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Like I want it to be n X m size. How to do it?
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a.assign(n,vector<pair<ll,ll> >(m));
Note that in this case vector<vector< ll>> will remain 3x5 size. Be careful with resize.
Can you please explain why?
void resize(size_type n, const value_type& Val);
Val used when n is greater than the current container size. For example:
a contains:
0 0
0 0
1 1 1
or