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CodeForces,codeforces难度

时间:2023-05-03 21:28:10 阅读:166837 作者:2913

b.restoringpaintingtimelimitpertest1secondmemorylimitpertest 256 megabytesinputstandardinputoutputstandardoutput

3个the painting is a square,eachcellcontainsasingleintegerfrom1ton,andifferentcellsmaycontaineitherdifferentorequalintegegers thetopleftsquare 22.fourelementsa,b,canddareknownandarelocatedasshownonthepicturebelow.help舒适的裙子findoutthenumberoferofelp Note,that this number may be equal to0,meaning舒适的裙子remembers something wrong。

twosquaresareconsideredtobedifferent,ifthereexistsacellthatcontainstwodifferentegersindifferentsquares。

inputthefirstlineoftheinputcontainsfiveintegersn,a,b,candd (1n100,000,1a,b,c,dn )-maximumposposssibibibibibibid

outputprintoneinteger-thenumberofdistinctvalidsquares。

examples input 2112 output2input 3123 output6notebelowareallthepossiblepaintingsforthefirstsample。

In the second sample,onlypaintingsdisplayedbelowsatisfyalltherules。

题意)如上图所示,给定a、b、c、d,求几个将3*3矩阵中所有2*2矩阵的值相加并相等的方法? 思路:你会发现这道题只需要固定中间值,然后找出已知的最小值和最大值,再求出最小无知的金毛n和最大无知的金毛1,其中一个位置就只能在这两个范围内。 因为相等,所以确定一个2*2矩阵后,其他矩阵就是唯一的。 因此,max(0,最小无知的金毛n-) (最大无知的金毛1 ) )就是所有的方案。

交流电源线:

# include iostream # include functional # include algorithm # include cstring # include vector # include cstdio # in sizeof(a ) a ) ) defineqwqios 33603360 sync _ with _ stdio )0) typedef_nsigned_innned ) ) define typedef _ _ ing const int T=200000 50; const int mod=1000000007; const double PI=3.1415926535898; int main () #ifdefZSCFreopen(input.txt )、) r )、stdin ); #endifll n,m,a,b,c,d,I,j,k; while () Scanf ) (% i64d % i64d % i64d % i64d % i64d ),n,a,b,c,d ) ) {ll mi=mod,ma=-mod; ll ans=0; for(I=1; i=n; I ) {mi=mod,ma=-mod; mi=min(mi,a b i n ); mi=min(mi,a c i n ); mi=min(mi,b d i n ); mi=min(mi,c d i n ); ma=max(ma,a b i 1); ma=max(ma,a c i 1 ); ma=max(ma,b d i 1 ); ma=max(ma,c d i 1 ); ans=(mi-ma1 ) 0? mi-ma 1:0; }printf('%I64d(n ),ans ); }return 0; }

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