=1+2+...+29+11/3+21/3+...+291/3+12/3+22/3+...+292/3
=(1+29)*29/2+[(11+291)*29/2]/3+[(12+292)*29/2/3]
=15*29+151*29/3+152*29/3
=15*29+101*29
=116*29=3364
=1+2+...+29+11/3+21/3+...+291/3+12/3+22/3+...+292/3
=(1+29)*29/2+[(11+291)*29/2]/3+[(12+292)*29/2/3]
=15*29+151*29/3+152*29/3
=15*29+101*29
=116*29=3364