02 2024 µµ°¸
ÕªÒª£º¹þÏ£ Ê÷¹þÏ££¬¾ÍÊǶÔÓÚÊ÷µÄ¹þÏ£ #include<bits/stdc++.h> using namespace std; #define ull unsigned long long int m,n; vector<int> son[60]; ull shift(ull x){ x^=x<<13;
ÔĶÁÈ«ÎÄ
ÕªÒª£ºµ¥µ÷Õ» ¶¨Òå a56爆大奖在线娱乐Õ»£¬ÆäÖеÄÔªËØÂú×ãµ¥µ÷ÐÔ ½â¾öNGEÎÊÌâ NGEÎÊÌ⣨Next Greater Element£© #include<bits/stdc++.h> using namespace std; const int N=3e6+10; int n; int a[N],stk[N],f[N]
ÔĶÁÈ«ÎÄ
ÕªÒª£º»ùÊýÅÅÐòºÍ¼ÆÊýÅÅÐò ¸ú±È½ÏÅÅÐò±ÈÆðÀ´£¬¸Ð¾õ¸´ÔӶȿª¹ÒÁË ¼ÆÊýÅÅÐò·Ç³£ÒÀÀµÓÚÊýÖµ·¶Î§£¬ÊÇ¿ªÁËÒ»¸öÖµÓòµÄÍ°£¬È»ºó¶Ô×ÅÍ°Êä³öËùÓÐÔªËØ£¬ÔÚÖµÓòСµÄÇé¿öÏ·dz£µÄ¿ì \(O(V+n)\) ¼ÆÊýÅÅÐò»¹ÓÐa56爆大奖在线娱乐ȨֵÏ߶ÎÊ÷ÓÅ»¯£¬¿ÉÒÔ½â¾ö´óÖµÓòÎÊÌâ \(O(n\log V)\)£¬µ«ÊÇûÓÐʲôÓÃɾµô »ùÊýÅÅÐò¿ÉÒÔ¿´×÷¼ÆÊýÅÅ
ÔĶÁÈ«ÎÄ
ÕªÒª£ºËæ»ú»¯ ÕâÊÇÒ»¸öÍÑÀëÁËÀíÂÛ£¬µ«ÊǼ°ÆäʵÓõÄÁìÓò¡£ Ëæ»úÊýµÄÉú³É 1.1 mt19937 mt19937 ¿ÉÒÔÉú³É 32 λÕûÊý£¬»ùÓÚ÷ÉÐýתËã·¨£¬ÊµÓÃÐÔ½ÏÇ¿¡£±ÊÕßÏ°¹ßÓÚʹÓÃʱ¼äµÄËæ»úÖÖ×Ó¡£ mt19937 engine(chrono::system_clock::now().time_since_e
ÔĶÁÈ«ÎÄ
ÕªÒª£º¿¨³£¿Æ¼¼ Õë¶ÔÓÚ¶¾Áö³öÌâÈË IO optimize cin/cout ºÜÂý£¬µ«ÊÇ ios::sync_with_stdio(0); cin.tie(0);cout.tie(0); cout<<endl;//Wrong cout<<'\n';//Right scanf/printf ±È½Ï¿ì£¬µ«¶ÔÓÚ¶¾Áö
ÔĶÁÈ«ÎÄ
ÕªÒª£º1.¸ùºÅ·ÖÖÎÓë·Ö¿é ÔÚÔ¤´¦ÀíÓëѯÎʵĸ´ÔÓ¶ÈÖ®¼äÑ°ÕÒƽºâµÄÒ»¸öËã·¨£¬Í¨³£ÒÔ¸ùºÅΪ·Ö½çÏß¡£ÊôÓÚÖǻ۵ı©Á¦¡£ 1.1. ¸ùºÅƽºâ ʹÓÃÊýѧ²»µÈʽ¶ÔÓÚãÐֵȡһ¸öÖµ£¬Ê¹µÃ¸´ÔÓ¶È×îÓÅ¡£Èç¹ûÓÐãÐÖµ \(B\)£¬ÈôÎÊÌâÓÐÒ»²¿·Ö±©Á¦¿ÉÒÔ \(O(B)\) ½â¾ö£¬ÁíÒ»²¿·Ö¿ÉÒÔ \(O(\frac{n}{B})\) ½â¾ö
ÔĶÁÈ«ÎÄ
ÕªÒª£ºÊ÷Ì×Ê÷ Ê÷×´Êý×飬£¨¶¯Ì¬¿ªµãÏ߶ÎÊ÷£©£¬Æ½ºâÊ÷ ¶þ±ÆƽºâÊ÷ ÄúÐèҪдa56爆大奖在线娱乐Êý¾Ý½á¹¹£¨¿É²Î¿¼ÌâÄ¿±êÌ⣩£¬À´Î¬»¤Ò»¸öÓÐÐòÊýÁУ¬ÆäÖÐÐèÒªÌṩÒÔϲÙ×÷£º ²éѯ \(k\) ÔÚÇø¼äÄÚµÄÅÅÃû ²éѯÇø¼äÄÚÅÅÃûΪ \(k\) µÄÖµ ÐÞ¸ÄijһλֵÉϵÄÊýÖµ ²éѯ ÔÚÇø¼äÄÚµÄÇ°Çý£¨Ç°Çý¶¨ÒåΪСÓÚ £¬ÇÒ×î´óµÄÊý£© ²éѯ \(k
ÔĶÁÈ«ÎÄ
ÕªÒª£ºABC342×ܽá A+B+C+D ËäÈ»Óн±£¬µ«ÊÇÒ»ÎÞËù»ñ£¬¶¼Åŵ½2000Ãû×óÓÒÁË¡£ Èüʱ¿ìËÙͨ¹ýÇ°ËÄÌ⣬µ«ÊǵÚÎåÌâ±»ÌâÄ¿ÃԻ󣬵ÚÁùÌâ˼·»ìÂÒ£¬µÚÆßÌâ±¾À´ÊÇÄÜÁ¦·¶Î§Ö®ÄÚ£¨Êý¾Ý½á¹¹ÊÇchn oierµÄÌس¤£©£¬µ«ÊÇû¶ÁÌâ¡£ E Ò»¸ö×î¶Ì·£¬ÕâÊÇÓÐÌáʾµÄ£¬µ«ÊÇÓÐÒ»¸öÃÔ»óÐÅÏ¢¡£ÌâÄ¿ÈÃa56爆大奖在线娱乐ÃÇÇó´Ó A ×îÍí³ö·¢µÄʱ
ÔĶÁÈ«ÎÄ
ÕªÒª£ºABC341×ܽá Score:1825 Rank:737 F Æäʵ°´ÕÕÌâÒ⣬Ôͼ¿ÉÄÜÓл·£¬µ«ÊÇÒòΪתÒÆÓÐȨֵÏÞ¶¨£¬×ª»»Ò»Ï¾ÍÊÇDAG£¬½øÐÐÍØÆËÅÅÐò¡£ G AKËù²î×îºóÒ»Ì⣬ʹÓÃÊýÐνáºÏ˼Ï룬xÖáΪÊý×éϱ꣬yÖáΪֵÓò¡£ ÌâÒâÊǸø³ö×ó¶Ëµã£¬ÓҶ˵ãÈa56爆大奖在线娱乐⣬ÇóÇø¼äƽ¾ùÖµ×î´ó ½øÐÐǰ׺ºÍ´¦Àí£¬È»ºó»á¾ªÆæµÄ·¢ÏÖ
ÔĶÁÈ«ÎÄ
ÕªÒª£ºµÑ¿¨¶ûÊ÷ ¶¨Òå ÒÔÒ»¸öÊýÁÐΪ»ù´¡£¬´æ´¢ÊýÁÐÖÐÔªËØ£¬Âú×ãÁ½¸öÏÞÖƵÄÊ÷¡£Ò»ÊÇÊýÁÐÖÐÔªËصÄϱêÂú×ã¶þ²æËÑË÷Ê÷µÄÐÔÖÊ£¬¶þÊÇÔªËصĴóСÂú×ã¶ÑµÄÐÔÖÊ¡£ ½¨Ê÷ ʹÓõ¥µ÷Õ»£¬ÔÚÏß½¨Ê÷¡£¿¼ÂÇ´Ó×óÍùÓÒÔÚÒÑÓеĵѿ¨¶ûÊ÷ÖÐÌí¼ÓÔªËØ£¬ÒòΪÐÂÔªËصÄϱê×î´ó£¬a56爆大奖在线娱乐Ö»¿ÉÄÜÈ¡´ú×îÓÒÁ´ÖеÄij¸öÔªËØ£¬²¢½«ÆäÊÕΪ×ó¶ù×Ó¡£ÓÖÓÉÓڶѵÄÐÔÖÊ£¬Ëù
ÔĶÁÈ«ÎÄ
ÕªÒª£ºÇø¼ä×î´ó×îСֵ(RMQ) st ±í ÀûÓà min,maxÇø¼äºÏ²¢ÊÇ¿ÉÖصģ¬±¶ÔöÔ¤´¦Àí ʱ¼ä¸´ÔÓ¶È \(O(n \log n+ q)\) ¿Õ¼ä¸´ÔÓ¶È \(O(n\log n)\) Ï߶ÎÊ÷ ¶þ½øÖÆ»®·ÖÇø¼ä ʱ¼ä¸´ÔÓ¶È \(O(n \log n)\) method of four russians ½¨Á¢µÑ
ÔĶÁÈ«ÎÄ
ÕªÒª£ºÐ¡ÇåÐÂÏ߶ÎÊ÷ ¶¨Òå ½áºÏʱ¼ä¸´ÔӶȷÖÎö£¨ÊÆÄÜ·ÖÎö£©ÒÔ¼°ÀÁ±ê¼ÇÓ¦ÓõķǴ«Í³Ï߶ÎÊ÷ ¿ÉÒÔÀí½âΪ´ø¼ôÖ¦µÄÏ߶ÎÊ÷ ¸´ÔÓ¶ÈÖ¤Ã÷ ÒÔ The Child and Sequence ΪÀý£¬ÏÈ¿´²Ù×÷ 1,2£¬¶ÔÓÚÒ»¸öÊý \(x\) ½øÐÐÈ¡Ä££¬ÒªÃ´Õâ¸öÊý±£³Ö²»±ä¡£ÈôÄ£Êý \(M>\frac{x}{2}\)£¬ÔòÊ£Óಿ·Ö
ÔĶÁÈ«ÎÄ
ÕªÒª£ºÍøÂçÁ÷×î´óÁ÷ ÓÐÏòͼ \(G\) ÖУ¬ÓÐÁ½¸öÌØÊâµÄµã£¬Ô´µãºÍ»ãµã£¬Ã¿Ìõ±ßÓÐÖ¸¶¨µÄÈÝÁ¿£¬Çó \(S\) µ½ \(T\) µÄ×î´óÁ÷¡£ ¾ÍÏñ´ÓÔ´µã·ÅË®£¬Ë®Á¿ÎÞÇî´ó£¬»ãµãµÄË®Á¿ÊǶàÉÙ£¿ ¶¨Òå \(c\) ΪÈÝÁ¿£¬\(f\) ΪÁ÷Á¿ Á÷Á¿Êغã \(f(x,y)\leq c(x,y)\) ÈÝÁ¿ÐÔÖÊ \(\sum
ÔĶÁÈ«ÎÄ
ÕªÒª£º01trie ¶¨Òå 01-trieÊÇ×Ö·û¼¯Îª0£¬1µÄtrie£¬¿ÉÒÔά»¤Òì»ò¼«Öµ£¬Î¬»¤Òì»òºÍ ʵÏÖ Ö÷ÌåÈÔÈ»ÊÇ trie £¬Î¬³Ö \(t\) Êý×é¼Ç¼¶ù×Ó²»±ä¡£ÐèÒªÒòΪÒì»òµÄÐÔÖÊ£¬a56爆大奖在线娱乐Ö»ÐèҪά»¤¼ÓÈë 0/1 ±ßµÄÆæżÐÔ¼´¿É£¬a56爆大奖在线娱乐Ìí¼Ó \(w\) Êý×é¼Ç¼¸¸½Úµãµ½¸Ã½ÚµãµÄ±ßÊý¡£´ËÍâÒòΪҪͳ¼ÆÒì»òºÍ£¬a56爆大奖在线娱乐
ÔĶÁÈ«ÎÄ
ÕªÒª£º¾ØÕó¿ìËÙÃÝ ¶¨Òå ʹÓþØÕó³Ë·¨¼ÓËÙµÝÍÆ ×¢Òâµã ¿ÉÒÔÔ¤´¦Àí \(2^k\) ´Î³Ë·½µÄתÒÆÊý×飬µ½Ñ¯ÎÊʱ£¬Ö»ÐèÒª³Ë \(log(n)\) ´Î¼´¿É ҪעÒâ¾ØÕóµÄ¸³Öµ²»Òª¸²¸Ç¸³Öµ£¬ÓеÄʱºòÉ÷Óà = ÒªÓà += ҪעÒâ¾ØÕóÖеķûºÅ£¬»áʹȡģ²Ù×÷³öÎÊÌâ ҪעÒâ¼ÓËÙµÝÍÆʱ f[i]=f[i-1] ´¦ÓÚiλµÄÊýÓ¦
ÔĶÁÈ«ÎÄ
ÕªÒª£ºÏ߶ÎÊ÷½ø½× ¶¯Ì¬¿ªµã ¶¨Òå ¶¯Ì¬´æ´¢Êý¾ÝµÄÏ߶ÎÊ÷£¬¿ÉÒÔÓÅ»¯¿Õ¼ä¸´ÔÓ¶È ÊµÏÖ ÎªÁ˱ÜÃâ \(N<<1\) £¬²»ÔÙʹÓÃÍêÈ«¶þ²æÊ÷´æ´¢£¬¶ø¼Ç¼×óÓÒ¶ù×Ó \(ls,rs\) ´ËÍâÐèÒª \(tot\) ¼Ç¼ÒѾ¿ªÁ˶àÉÙµã ÔڵݹéʱҪ¼Ç¼µãµÄ×óÓÒÇø¼ä£¬È·±£¿ªµãʱÄÜÖªµÀÇø¼ä´óС void modify(int &
ÔĶÁÈ«ÎÄ
ÕªÒª£ºVP-CF1879 ×ܽá Url:https://codeforces.com/contest/1879 Score:A+B+C+D D ×ö³öÀ´ÁË£¬Ê¹ÓÃÁËÒ»¸ö¸´Ôӵķ½·¨¡£²ðλ¿Ï¶¨Ã»´í£¬µ«ÊÇÓÐÒì»òǰ׺ºÍµÄ·½·¨£¬¿ÉÒÔ´ó´ó¼ò»¯ÂëÁ¿¡£ E ×ö³öÀ´ÁË£¬Ì°Ðĸã³öÀ´ÐÔÖÊ£¬¼´°´Éî¶ÈȾɫ¡£µ«ÊÇû¶ÁÌ⣬û¿´µ½ \(k\
ÔĶÁÈ«ÎÄ
ÕªÒª£ºÖØÁ´ÆÊ·Ö ÓÅÏÈ×ßÖضù×Ó£¬Â·¾¶Ìø²»³¬¹ý \(O(\log n)\) int siz[N],fa[N],dep[N],top[N],dfn[N],hson[N],dfc;//×¢Òâa56爆大奖在线娱乐¶¼Òª´¦Àí void dfs1(int x,int Fa){ fa[x]=Fa; siz[x]=1; hson[x]=0;
ÔĶÁÈ«ÎÄ
ÕªÒª£ºCF1929 ×ܽá Url:https://codeforces.com/contest/1929 Rating:https://codeforces.com/bestRatingChanges/12561378 C Îó½âÁËÌâÒ⣬ÒÔΪ¶Ä³¡»áÅäºÏËûÇ°Ãæx´Î¶¼ÊäÈ»ºóÓ®×îºóÒ»³¡¡£ÔÀ´¶Ä³¡²»»áÅäºÏSasha
ÔĶÁÈ«ÎÄ
ÕªÒª£ºÐéÊ÷ (Compressed Tree) ¶¨Òå Ê÷ÉÏÓÐһЩ¹Ø¼üµã£¬ÓкܶàÎÞÓõ㣬a56爆大奖在线娱乐¾Í¹Ø¼üµã½¨Ê÷³ÆΪÐéÊ÷¡£ ½¨Á¢ÐéÊ÷ ²»ÄÜÖ»Óйؼüµã£¬Ò»°ã»¹ÒªÓÐËûÃǵÄlca£¬²ÅÄÜͳ¼ÆÐÅÏ¢¡£ÐÅÏ¢µÄÐèÇóºÍͳ¼Æ·½·¨¶àÖÖ¶àÑù£¬ÒªÇómax,min,cntµÈµÈ¡£¿ÉÒÔÊ÷Á´ÆÊ·Ö+Ï߶ÎÊ÷»ò±¶Ôö·¨Î¬»¤Ðé±ß¡£ ¿ÉÖ¤ÐéÊ÷½Úµã²»³¬¹ý \(2
ÔĶÁÈ«ÎÄ
ÕªÒª£ºOI ·½·¨ÂÛ ·ÖÎöÎÊÌâÐÔÖÊ ÎÊÌ⽨ģ ¼ÓËÙÇó½â c++ÓïÑÔʵÏÖ ·ÖÎöÎÊÌâÐÔÖÊ ¶þÑ¡Ò»£º2-sat Çø¼äÎÊÌ⣺Ê÷×´Êý×飬Ï߶ÎÊ÷£¨ÓÅ»¯½¨Í¼£©£¬Ç°×ººÍ£¬²î·Ö ×î´óµÄ×îСֵ£¬×îСµÄ×î´óÖµ£º¶þ·Ö´ð°¸ ¶à¸ö״̬µÄÖµ£º¿É³Ö¾Ã»¯Êý¾Ý½á¹¹ ÍùÍùÕÒ³öÎÊÌâÐÔÖÊ£¬ÊǽâÌâµÄÍ»ÆÆ¿Ú ÐÔÖʵŤ¾ß¡ª¡ªÃÀÃîµÄÊýѧ ×¢Òâ²»µÈʽÁ½±ßͬ³Ë
ÔĶÁÈ«ÎÄ
ͻ񻣼Store a tuple of (value of maximum, index of maximum, value of the second maximum). To merge two segments, we compare if the indices of the maximums a
ÔĶÁÈ«ÎÄ
ÕªÒª£º×î´óÁ÷ÎÊÌâ ÓÐÏòͼ G ÖУ¬ÓÐÁ½¸öÌØÊâµÄµã£¬Ô´µãºÍ»ãµã£¬Ã¿Ìõ±ßÓÐÖ¸¶¨µÄÈÝÁ¿£¬ÇóSµ½TµÄ×î´óÁ÷¡£ ¾ÍÏñ´ÓÔ´µã·ÅË®£¬Ë®Á¿ÎÞÇî´ó£¬»ãµãµÄË®Á¿ÊǶàÉÙ£¿ ¶¨Òå cΪÈÝÁ¿£¬fΪÁ÷Á¿ Á÷Á¿Êغã \(f(x,y)\leq c(x,y)\) ÈÝÁ¿ÐÔÖÊ \(\sum f(u,x) = \sum f(x,u)\) б¶Ô³Æ
ÔĶÁÈ«ÎÄ
ÕªÒª£ºCDQ·ÖÖÎ ÒýÈë Æ«ÐòÎÊÌâ ¶ÔÓÚa56爆大奖在线娱乐ÓÐÐò¶Ô \((a_i,b_i)\) ÇóÓжàÉÙ¸öÓÐÐò¶Ô \((a_j,a_j)\) \(a_i<a_j,b_i<b_j\) ±©Á¦ \(O(n^2)\) °´ \(a\) ÅÅÐò£¬ÎÊÌâΪÇó˳Ðò¶Ô,cdq·ÖÖÎ ¶¨Òå ½â¾öÌض¨ÖÖÀàÎÊÌâµÄËã·¨£¬Í³¼Æ×óÇø¼ä¶ÔÓÒÇø¼äµÄ¹±Ï×£¬Ò»¸öµãËù
ÔĶÁÈ«ÎÄ
ÕªÒª£ºµã·ÖÖÎ ¶¨Òå Ê÷ÉϵķÖÖÎ ÏÈÇóÒ»¸öµãµÄ´ð°¸£¬È»ºóÇó×ÓÊ÷ Ê÷ÉϾàÀëСÓÚµÈÓÚkµÄµã¶ÔÊýÁ¿ ö¾ÙÒ»¸öµã p Çó½â¾¹ýpµÄµã¶Ô¹±Ï×£¬È»ºóµÝ¹é½â¾ö×ÓÊ÷ ΪÁ˽µµÍ·ÖÖθ´ÔӶȣ¬ÒªÇóÖØÐÄ£¬ÇóÖØÐÄÒªÏÞ¶¨×ÓÊ÷·¶Î§ÄÚ£¬Ìí¼Ó vis ·ÀÖ¹ÉϷã¬ÇódisÒ²Òª ansÒª¼õÈ¥ÔÚͬһ¸ö×ÓÊ÷ ÖØÐĵÄ×ÓÊ÷СÓÚ \(n/2\)£¬a56爆大奖在线娱乐µ÷ÓÃ
ÔĶÁÈ«ÎÄ
ÕªÒª£ºÆô·¢Ê½ºÏ²¢ ¶¨Òå ÔÚ²¢²é¼¯ºÍÊ÷ÉÏ´¦ÀíÀëÏßÎÊÌâµÄËã·¨£¬Ö÷Ҫ˼ÏëÊÇ°ÑС¼¯ºÏ²¢µ½´ó¼¯ºÏÉÏ ×ö·¨ Ê÷ÉÏÑÕÉ«£ºÒ»¿ÃÊ÷£¬a56爆大奖在线娱乐½Úµã¶¼ÓÐÒ»¸öÑÕÉ«£¬¸ø¶¨ m ´ÎѯÎÊ£¬ÎÊÒÔ x Ϊ¸ùµÄ×ÓÊ÷ÓжàÉÙÖÖ²»Í¬µÄÑÕÉ«¡£ ÇáÖØÆÊ·Ö£¬Ö»ÐèÒª¼Ç¼Öضù×Ó¼´¿É¡£ÏȱéÀúÇá¶ù×Ó£¬²»¼ÆÐ޸ġ£ÔÙ±éÀúÖضù×Ó£¬¼ÆÈëÐ޸ġ£×îºóÔÙ±éÀúÇá¶ù×Ó£¨dfsÐòÁмò
ÔĶÁÈ«ÎÄ
ÕªÒª£ºÖ÷ϯÊ÷ ¶¨Òå ¿É³Ö¾Ã»¯µÄÏ߶ÎÊ÷ ʵÏÖ void mkrt(int &p,int q){ int tmp = mknode(); t[tmp] = t[q]; p = tmp; } void pushup(int p){ t[p].dat = t[t[p].ls].dat+t[t[p].rs].dat
ÔĶÁÈ«ÎÄ
ÕªÒª£ºÏßÐÔ»ù ¶¨Òå Ò»¸öÕýÕûÊýÐòÁУ¬ÈÃÏßÐÔ»ù¿ÉÒÔÓÃÒì»òºÍa56爆大奖在线娱乐ÆäÖÐÈa56爆大奖在线娱乐âÒ»¸öÊý£¬²¢ÇÒÏßÐÔ»ùµÄ¸öÊý×îÉÙ ÐÔÖÊ ÐòÁÐÖеÄÈκa56爆大奖在线娱乐»¸öÊý¶¼¿ÉÒÔÓÉÏßÐÔ»ùÖеÄÊýÒì»òµÃµ½ ÈκÎÊýµÄÒì»òºÍ²»ÎªÁã ±£³ÖÐÔÖÊÒ»µÄÇ°ÌáÏ£¬ÏßÐÔ»ùµÄÊýÁ¿Î¨Ò»ÇÒ×îÉÙ ÏßÐÔ»ùµÄ¹¹Ôì ²»ÄܲåÈëÏßÐÔ»ù£¬¼´x¾¹ýÈô¸É´a56爆大奖在线娱乐ì»ò±ä³É0£¬¸ù¾ÝÐÔÖÊÈý²»Ðè¼ÓÈë ¿ÉÒÔ±»²åÈ룬
ÔĶÁÈ«ÎÄ