codeforces 450B Jzzhu and Sequences
题目链接：http://codeforces.com/contest/450/problem/B解题思路：找循环节。注意当f[i]是负数的时候一定要把他加上mod直到>0为止;e：-3%4==1；#include<iostream>usingnamespacestd;constintmod=1e9+7...
Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals)爆零记
昨晚一个瓜皮说今晚有cf，听说是晚间场，我瞅了一眼，娃，VKCup，上分的好机会，看着比赛时间就有点心酸了，0:35，当时一直在纠结要不要打的问题，当时想着应该不难吧，要不打一下吧，要不还是看看题先，如果容易就打，难的话就不打了好的吧！于是就这样愉快的决定了。。。。。。。cf日常延时10分钟，0:45，要不要去睡觉啊，...
Codeforces Round #336 (Div. 2)【A.思维，暴力，B.字符串，暴搜，前缀和，C.暴力，D，区间dp，E，字符串,数学】
timelimitpertest：1secondmemorylimitpertest：256megabytesinput：standardinputoutput：standardoutputSaitamaaccidentallydestroyedahotelagain.Torepaythehotelcompany,Ge...
Codeforces 833E Caramel Clouds
timelimitpertest：3secondsmemorylimitpertest：256megabytesinput：standardinputoutput：standardoutputItiswell-knownthatthebestdecorationforaflowerbedinSweetlandareva...
Codeforces 833D Red-black Cobweb【树分治】
timelimitpertest：6secondsmemorylimitpertest：256megabytesinput：standardinputoutput：standardoutputSlastyonalikestowatchlifeofnearbygrove'sdwellers.Thistimeshewatc...
Codeforces 834E The Bakery【枚举+数位dp】
timelimitpertest：1secondmemorylimitpertest：256megabytesinput：standardinputoutput：standardoutputRecently,awildKrakozyabraappearedatJellyCastle.Itis,truthtobesaid...
Codeforces 834D The Bakery【dp+线段树维护+lazy】
timelimitpertest:2.5secondsmemorylimitpertest:256megabytesinput:standardinputoutput:standardoutputSometimeagoSlastyonatheSweetmaiddecidedtoopenherownbakery!Sheb...
Codeforces Round #426 (Div. 2)【A.枚举，B.思维，C,二分＋数学】
timelimitpertest：1secondmemorylimitpertest：256megabytesinput：standardinputoutput：standardoutputWalkingthroughthestreetsofMarshmallowCity,Slastyonahavespottedsom...
Codeforces Round #434 (Div. 2, based on Technocup 2018 Elimination Round 1)&&Codeforces 861C Did you mean...【字符串枚举，暴力】
timelimitpertest：1secondmemorylimitpertest：256megabytesinput：standardinputoutput：standardoutputBerofficetexteditorhasawiderangeoffeaturesthathelpworkingwithtext...
Codeforces Round #434 (Div. 2, based on Technocup 2018 Elimination Round 1)&&Codeforces 861B Which floor?【枚举，暴力】
timelimitpertest:1secondmemorylimitpertest:256megabytesinput:standardinputoutput:standardoutputInabuildingwherePolycarplivesthereareequalnumberofflatsoneachfloo...
Codeforces Round #434 (Div. 2, based on Technocup 2018 Elimination Round 1)&&Codeforces 861A k-rounding【暴力】
timelimitpertest:1secondmemorylimitpertest:256megabytesinput:standardinputoutput:standardoutputForagivenpositiveintegerndenoteitsk-roundingastheminimumpositivei...
Codeforces 842B Gleb And Pizza【几何，水】
timelimitpertest：2secondsmemorylimitpertest：256megabytesinput：standardinputoutput：standardoutputGleborderedpizzahome.Whenthecourierdeliveredthepizza,hewasveryup...
Codeforces 842A Kirill And The Game【暴力，水】
timelimitpertest：2secondsmemorylimitpertest：256megabytesinput：standardinputoutput：standardoutputKirillplaysanewcomputergame.Hecametothepotionstorewherehecanbuya...
Codeforces 839E Mother of Dragons【__builtin_popcount()的使用】
timelimitpertest：2secondsmemorylimitpertest：256megabytesinput：standardinputoutput：standardoutputTherearencastlesintheLannister'sKingdomandsomewallsconnecttwocas...
Codeforces 839D Winter is here【数学：容斥原理】
timelimitpertest：3secondsmemorylimitpertest：256megabytesinput：standardinputoutput：standardoutputWinterishereattheNorthandtheWhiteWalkersareclose.JohnSnowhasanar...