+ Pn+1 i=1 log(xi) · xi log(n + 1) <latexit sha1_base64="F8YeZ6RaO51uMQWyLMgfw66KP4A=">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</latexit> xi = 8 > < > : ti N+1 (i = 1) ti ti 1 N+1 (i = 2, · · · , n) N+1 tn N+1 (i = n + 1) <latexit sha1_base64="qxm+J8AbA6fuwZSuuIcxFLuQ44A=">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</latexit> ti(i = 1, 2, · · · , n) <latexit sha1_base64="hdr2ASBspsxsycPkb3uZp044b/s=">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</latexit> , - ,