tau0

import json
import operator

# Original version by tau0 and st3v3n on codeforces
# Go the URL below on your browser and download the file to the same directory as this script
# https://codeforces.com/api/problemset.problems

data = json.load(open("/Users/tau0/Downloads/problemset.problems.json"))
counter = dict()
problems = data["result"]["problems"]

tau0

import json
import urllib2
url = "http://codeforces.com/api/problemset.problems"
data = json.dumps({})
req = urllib2.Request(url, data, {'Content-Type': 'application/json'})
f = urllib2.urlopen(req)
response = f.read()
f.close()

data = json.loads(response)

tau0

Warning: No Fortran optimization information was provided.  You may want to consider
setting FCFLAGS and FFLAGS or pass the `--default-fortran-flags` option to
`brew install` if your compiler is compatible with GCC.

If you like the default optimization level of your compiler, ignore this
warning.
Warning: No Fortran optimization information was provided.  You may want to consider
setting FCFLAGS and FFLAGS or pass the `--default-fortran-flags` option to
`brew install` if your compiler is compatible with GCC.

tau0

#include <iostream>
 
using namespace std;
 
vector<int> doubleValues (const vector<int>& v)
{
    vector<int> new_values;
    new_values.reserve();
    for (auto itr = v.begin(), end_itr = v.end(); itr != end_itr; ++itr )
    {