\u0110\u00e1nh \u0111\u1ec1 d\u00e0n l\u00e0 nh\u01b0 th\u1ebf n\u00e0o c\u0169ng th\u01b0\u1eddng l\u00e0 c\u00e2u h\u1ecfi cho nh\u1eefng ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u t\u00ecm hi\u1ec3u v\u1ec1 b\u1ed9 m\u00f4n gi\u1ea3i tr\u00ed \u0103n ti\u1ec1n n\u00e0y. \u0110\u00e2y l\u00e0 c\u00e1ch \u0111\u00e1nh \u0111\u1ec1 th\u00f4ng d\u1ee5ng, ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c nhi\u1ec1u ch\u01a1i nh\u1ea5t trong s\u00e2n ch\u01a1i s\u1ed1 \u0111\u1ec1.<\/em><\/p>\n C\u00e1ch ch\u01a1i kh\u00e1 \u0111\u01a1n gi\u1ea3n v\u00e0 t\u1ef7 l\u1ec7 \u0103n \u0111\u01b0\u1ee3c r\u1ea5t cao n\u00ean vi\u1ec7c c\u1ee7a b\u1ea1n ch\u1ec9 c\u1ea7n ki\u00ean tr\u00ec nu\u00f4i d\u01b0\u1ee1ng c\u00e1c con s\u1ed1 \u0111\u1ec1 d\u00e0n n\u00e0y, ch\u00fa \u00fd nh\u1eefng m\u1eb9o, quy lu\u1eadt \u0111\u1ec3 \u0111\u00e1nh tr\u00fang th\u1eafng l\u1edbn. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y, ch\u00fang t\u00f4i s\u1ebd chia s\u1ebb v\u1edbi c\u00e1c b\u1ea1n c\u00e1c lo\u1ea1i \u0111\u00e1nh \u0111\u1ec1 d\u00e0n<\/strong> d\u1ec5 \u0103n d\u1ec5 tr\u00fang \u0111\u1ec3 b\u1ea1n tham kh\u1ea3o v\u00e0 ch\u1ecdn \u0111\u01b0\u1ee3c m\u1ed9t \u0111\u1ec1 d\u00e0n may m\u1eafn v\u1edbi m\u00ecnh.<\/p>\n \u0110\u00e1nh \u0111\u1ec1 d\u00e0n c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 may m\u1eafn c\u1ee7a m\u1ed7i c\u00e1 nh\u00e2n ng\u01b0\u1eddi ch\u01a1i. D\u00f9 l\u00e0 kinh nghi\u1ec7m \u0111\u00e1nh \u0111\u1ec1 d\u00e0n \u0111\u01b0\u1ee3c ng\u01b0\u1eddi \u0111i tr\u01b0\u1edbc \u0111\u1ec3 l\u1ea1i nh\u01b0ng \u0111\u00e2y l\u00e0 kinh nghi\u1ec7m n\u00ean c\u0169ng kh\u00f4ng th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c nh\u1eefng l\u00fac sai s\u00f3t, v\u00e0 kinh nghi\u1ec7m th\u01b0\u1eddng s\u1ebd t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ed9t th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh, th\u1eddi gian ng\u1eafn.<\/p>\n <\/p>\n C\u00f3 r\u1ea5t nhi\u1ec1u b\u1ed9 s\u1ed1 \u0111\u1ec3 c\u00e1c b\u1ea1n ch\u1ecdn l\u1ef1a v\u00e0 \u0111\u00e1nh \u0111\u1ec1 d\u00e0n tr\u00fang l\u1edbn. Ph\u1ed5 bi\u1ebfn v\u00e0 \u0111\u01a1n gi\u1ea3n nh\u1ea5t l\u00e0<\/p>\n D\u00e0n \u0111\u1ec1 x\u1ebfp theo t\u1ed5ng:<\/strong> L\u00e0 c\u00e1ch d\u00e0n \u0111\u1ec1 t\u00ednh theo t\u1ed5ng c\u1ee7a hai s\u1ed1 c\u1ed9ng l\u1ea1i. C\u00f3 t\u1ea5t c\u1ea3 10 t\u1ed5ng t\u1eeb 0 \u0111\u1ebfn 9.<\/p>\n V\u00ed d\u1ee5 nh\u01b0 t\u1ed5ng 5 s\u1ebd l\u00e0 d\u00e3y 05 50 14 41 23 32 69 96 78 87, t\u1ed5ng 8 s\u1ebd l\u00e0 08 80 17 71 26 62 35 53 44 99<\/p>\n D\u00e0n \u0111\u1ec1 x\u1ebfp theo \u0111\u1ea7u – \u0111u\u00f4i:<\/strong> L\u00e0 d\u00e3y s\u1ed1 10 con s\u1ed1 c\u00f3 s\u1ed1 \u0111\u1ea7u gi\u1ed1ng nhau ti\u00ean gi\u1ed1ng nhau. N\u1ebfu d\u00e0n theo \u0111u\u00f4i th\u00ec ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c con s\u1ed1 \u0111u\u00f4i s\u1ebd gi\u1ed1ng nhau.<\/p>\n V\u00ed d\u1ee5:<\/p>\n \u0110\u1ea7u 1 s\u1ebd c\u00f3 10 11 12 13 14 15 16 17 18 19<\/p>\n \u0110u\u00f4i 3 c\u00f3 d\u00e3y d\u00e0n \u0111\u1ec1 03 13 23 43 53 63 73 83 93<\/p>\n Ngo\u00e0i ra c\u00f2n c\u00f3 c\u00e1c lo\u1ea1i \u0111\u00e1nh d\u00e0n \u0111\u1ec1 theo b\u1ed9 s\u1ed1 v\u00e0 theo ch\u1ea1m. Hai lo\u1ea1i n\u00e0y kh\u00e1 ph\u1ee9c t\u1ea1p v\u00e0 b\u1ea1n c\u1ea7n c\u00f3 kinh nghi\u1ec7m th\u00ec m\u1edbi c\u00f3 th\u1ec3 n\u1eafm r\u00f5 quy lu\u1eadt c\u1ee7a ch\u00fang \u0111\u01b0\u1ee3c v\u00e0 \u0111\u00e1nh \u0111\u1ec1 d\u00e0n hi\u1ec7u qu\u1ea3 t\u1eeb nh\u1eefng con s\u1ed1 may m\u1eafn n\u00e0y.<\/p>\n Theo t\u00ean g\u1ecdi th\u00ec ch\u00fang ta c\u00f3 d\u00e3y s\u1ed1 12 14 16 18 24 26 28 32 34 36 38 42 46 48 52 54 56 58 62 64 68 72 74 76 78 82 84 86 92 94 96 98. V\u00e0 d\u00e3y s\u1ed1 n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u00e1nh theo tu\u1ea7n, m\u1ed7i tu\u1ea7n s\u1ebd v\u1ec1 \u00edt nh\u1ea5t l\u00e0 hai con s\u1ed1 trong d\u00e3y s\u1ed1 tr\u00ean.<\/p>\n \u0110\u1ec3 \u0111\u00e1nh \u0111\u01b0\u1ee3c d\u00e3y s\u1ed1 hi\u1ec7u qu\u1ea3, b\u1ea1n c\u0169ng kh\u00f4ng n\u00ean \u0111\u00e1nh t\u1ea5t c\u1ea3 con s\u1ed1 trong d\u00e3y, c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o gi\u1ea5c m\u01a1, hay kinh nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi kh\u00e1c,… \u0111\u1ec3 ch\u1ecdn nh\u1eefng con s\u1ed1 h\u1ea1p m\u00e0 \u0111\u00e1nh ng\u00e0y h\u00f4m \u0111\u00f3. V\u00e0 khi \u0111\u00e1nh \u0111\u1ec1 d\u00e0n 36 n\u00e0y c\u1ea7n c\u00f3 s\u1ef1 ki\u00ean nh\u1eabn v\u00e0 s\u1ed1 ti\u1ec1n \u0111\u1ea7u t\u01b0 \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 duy tr\u00ec.<\/p>\n <\/p>\n C\u00e1ch \u0111\u00e1nh \u0111\u1ec1 d\u00e0n n\u00e0y r\u1ea5t d\u1ec5 \u0103n th\u01b0\u1edfng hi\u1ec7u qu\u1ea3 khi ch\u00fang ta d\u1ef1a v\u00e0o k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t h\u00f4m tr\u01b0\u1edbc m\u00e0 \u0111\u00e1nh, v\u00e0 c\u00e1ch n\u00e0y b\u1ea1n c\u1ea7n duy tr\u00ec trong m\u1ed9t tu\u1ea7n \u0111\u1ec3 thu l\u1ea1i l\u00e3i. V\u00ed d\u1ee5 nh\u01b0 k\u1ebft qu\u1ea3 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t hai ng\u00e0y li\u00ean ti\u1ebfp l\u00e0 28294 13786 c\u00f3 t\u1ed5ng l\u00e0 25 th\u00ec b\u1ea1n n\u00ean ch\u1ecdn d\u00e3y \u0111\u00e1nh \u0111\u1ec1 d\u00e0n t\u1ed5ng 7 \u0111\u1ec3 \u0111\u00e1nh th\u00ec ch\u1eafc ch\u1eafn s\u1ebd \u0103n.<\/p>\n Ngo\u00e0i ra, c\u00f2n c\u00f3 ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh \u0111\u1ec1 d\u00e0n theo t\u1ed5ng hi\u1ec7u. C\u0169ng d\u1ef1a v\u00e0o k\u1ebft qu\u1ea3 \u0111\u1eb7c bi\u1ec7t c\u1ee7a tu\u1ea7n tr\u01b0\u1edbc t\u00ednh t\u1ed5ng c\u1ee7a c\u00e1c s\u1ed1 v\u00e0 th\u1ed1ng k\u00ea \u0111\u01b0\u1ee3c nh\u1eefng t\u1ed5ng ch\u01b0a ra. V\u00ed d\u1ee5 nh\u01b0 tu\u1ea7n n\u00e0y t\u1ed5ng c\u00e1c gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 5 8 6 9 6 4 2 th\u00ec c\u00e1c t\u1ed5ng ch\u01b0a ra s\u1ebd l\u00e0 0 1 3 7. Khi \u0111\u00f3 ch\u00fang ta gh\u00e9p c\u00e1c t\u1ed5ng ch\u01b0a ra th\u00e0nh c\u00e1c d\u00e3y s\u1ed1 010 030 070 131 171 373 v\u00e0 ta c\u00f3 d\u00e3y s\u1ed1 12 s\u1ed1 l\u00e0 01 10 03 30 07 70 13 31 17 71 37 73.<\/p>\n Tr\u00ean \u0111\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh \u0111\u1ec1 d\u00e0n \u0111\u01b0\u1ee3c nh\u1eefng ng\u01b0\u1eddi c\u00f3 kinh nghi\u1ec7m, \u0111i tr\u01b0\u1edbc \u0111\u1ec3 l\u1ea1i. Nh\u1eefng c\u00e1ch n\u00e0y r\u1ea5t hi\u1ec7u qu\u1ea3 v\u00e0 c\u1ea7n c\u00f3 th\u1eddi gian t\u00ednh to\u00e1n v\u00e0 nu\u00f4i d\u01b0\u1ee1ng \u0111\u1ec3 c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t c\u0169ng nh\u01b0 chi\u1ebfn th\u1eafng ch\u1ee7 c\u00e1i. Ngo\u00e0i ra b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 tham kh\u1ea3o th\u00eam v\u1ec1 chuy\u00ean m\u1ee5c soi c\u1ea7u l\u00f4 \u0111\u1ec1<\/strong> c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 c\u00f3 nhi\u1ec1u k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\nC\u00e1c b\u1ed9 s\u1ed1 trong l\u00f4 \u0111\u1ec1 d\u00e0n<\/strong><\/h2>\n
C\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh \u0111\u1ec1 d\u00e0n th\u00f4ng d\u1ee5ng<\/strong><\/h2>\n
Ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh \u0111\u1ec1 d\u00e0n 36 \u0111\u00edt ch\u1eb5n b\u1ecf k\u00e9p<\/strong><\/h3>\n
Nu\u00f4i d\u00e0n \u0111\u1ec1 theo b\u1ed9 t\u1ed5ng<\/strong><\/h3>\n
c\u1ea7u \u0111\u1eb9p uy t\u00edn ch\u00ednh x\u00e1c mb<\/span><\/strong><\/h4>\n