1、(49+360)+(48+360*2)+(47+360*3)+...+(2+360*48)+(1+360*49)2、1+2+3+4-5-6-7-8+9+10+11+12-13-14-15-16+...+1958+1986+1987+1988-1989-1990-1991-1992+1993+1994+1995+19963、20112011*2010-20102010*2011
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![1、(49+360)+(48+360*2)+(47+360*3)+...+(2+360*48)+(1+360*49)2、1+2+3+4-5-6-7-8+9+10+11+12-13-14-15-16+...+1958+1986+1987+1988-1989-1990-1991-1992+1993+1994+1995+19963、20112011*2010-20102010*2011](/uploads/image/z/14430725-53-5.jpg?t=1%E3%80%81%EF%BC%8849%2B360%EF%BC%89%2B%EF%BC%8848%2B360%2A2%EF%BC%89%2B%EF%BC%8847%2B360%2A3%EF%BC%89%2B...%2B%EF%BC%882%2B360%2A48%EF%BC%89%2B%EF%BC%881%2B360%2A49%EF%BC%892%E3%80%811%2B2%2B3%2B4-5-6-7-8%2B9%2B10%2B11%2B12-13-14-15-16%2B...%2B1958%2B1986%2B1987%2B1988-1989-1990-1991-1992%2B1993%2B1994%2B1995%2B19963%E3%80%8120112011%2A2010-20102010%2A2011)
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