ZOJ Problem Set - 3708 Density of Power Network
http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3708
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#include <stdio.h> #include <string.h> int main( int
argc, char
*argv[]) { int
T,i,j,lineSum; int
N,M; int
x[505],y[505]; int
lineL [505][505] ; scanf ( "%d" ,&T); for (i = 0 ; i < T ;i++){ lineSum = 0; scanf ( "%d %d" ,&N,&M); memset
(lineL,0, sizeof (lineL)); memset
(lineL,0, sizeof (x)); memset
(lineL,0, sizeof (y)); for (j = 0 ; j < M ;j++){ scanf ( "%d" ,&x[j]); } for (j = 0 ; j < M ;j++){ scanf ( "%d" ,&y[j]); } for (j = 0 ; j < M ;j++){ if (lineL[x[j]][y[j]] == 0 && lineL[y[j]][x[j]] == 0){ lineSum ++; lineL[x[j]][y[j]]=lineL[y[j]][x[j]]=1; } } printf ( "%.3f\n" ,lineSum/(N*1.0)); } return
0; } |
ZOJ Problem Set - 3708 Density of Power Network,古老的榕树,5-wow.com
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