#!/usr/bin/python3
"Analyze logs from reversedigitspan.py.  Not safe for untrusted input."
import datetime
import sys


def main():
    perf = {}
    min_ts, max_ts = None, None
    for line in sys.stdin:
        if 'reverse digit span of' not in line:
            continue

        fields = line.split()
        timestamp = int(fields[0])
        correctness = fields[1]
        size = int(fields[6])

        who_start = line.index(' by ') + 4
        quote = line.index("'", who_start + 2)
        if quote == -1:
            who_end = len(line)
        else:
            who_end = quote + 1
        who = eval(line[who_start:who_end])

        if min_ts is None or timestamp < min_ts:
            min_ts = timestamp
        if max_ts is None or timestamp > max_ts:
            max_ts = timestamp
        if who not in perf:
            perf[who] = {}
        if size not in perf[who]:
            perf[who][size] = {'correct': 0, 'incorrect': 0}
        perf[who][size][correctness] += 1

    min_dt = datetime.datetime.utcfromtimestamp(min_ts)
    max_dt = datetime.datetime.utcfromtimestamp(max_ts)
    print("From {} to {} UTC ({}):".format(min_dt, max_dt, max_dt - min_dt))

    for who, how in perf.items():
        print('\t{} did {} trials:'.format(who,
                                           sum(k for measure in how.values()
                                                 for k in measure.values())))
        for size, measure in sorted(how.items()):
            correct = measure['correct']
            incorrect = measure['incorrect']
            print('\t\tat {} digits, {} correct, {} incorrect ({:5.4}%, {:5.4}% smoothed)'
                  .format(size, correct, incorrect,
                          100*correct/(incorrect+correct),
                          100*(correct+1)/(incorrect+correct+2)))


if __name__ == '__main__':
    main()