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,ny,i,ter); Mp[nx][ny]=0; } Else{DFS (nx,ny,i,ter+1); Mp[nx][ny]=0; } } if(nx==exny==ey) { if(dire==i) {if(ter2) flag=true; return; } Else { if(ter2) flag=true; return; } } } return;}intMain () {#ifdef LOCAL freopen ("In.txt","R", stdin);#endif //LOCAL //StartIos::sync_with_stdio (false); while(cin>>n>>m (n| |m) {memset (MP,0,sizeofMP); for(intI=1; i) for(intj=1; j) Cin>>Mp[i][j]; intN; CIN>>o;

Code One:#include #include#includeusing namespacestd;Const intmax_n=205;Const intinf=0x30303030;CharMap[max_n][max_n];intn,m;intSx,sy;intGx,gy;intdx[4]={1,0, -1,0};intdy[4]={0,1,0, -1};typedef pairint,int>P;intDist[max_n][max_n];intBFsintYintx) { for(intI=0; i) for(intj=0; j) Dist[i][j]=INF; DIST[SY][SX]=0; Queueque; Que.push (P (SY,SX)); while(!Que.empty ()) {P pos=Que.front (); Que.pop

; + Point Next,now; -now.x=sx;now.y=Sy; +now.step=0; Anow.dir=-1; at Q.push (now); - while(!q.empty ()) - { -now=Q.front (); - Q.pop (); - if(now.x==exnow.y==ey) in return 1; - for(i=0;i4; i++) to { +next.x=now.x+Dx[i]; -next.y=now.y+Dy[i]; thenext.step=Now.step; *Next.dir=i; $ if(next.dir!=now.dirnow.dir!=-1)//change the direction to add one, but the first step is not a turning pointPanax Notog

{ Draw_sector ($ img, $ ox, $ oy, $ a, $ B, $ sd, $ ed, $ clr ); If ($ sd { List ($ R, $ G, $ B) = draw_getdarkcolor ($ img, $ clr ); $ Clr = imagecolorallocate ($ img, $ R, $ G, $ B ); If ($ ed> 180) $ ed = 180; List ($ sx, $ sy) = draw_getexy ($ a, $ B, $ sd ); $ Sx + = $ ox; $ Sy + = $ oy; List ($ ex, $ ey) = draw_getexy ($ a, $ B, $ ed ); $ Ex + = $ ox; $ Ey + = $ oy; Imageline ($ img, $

); $x 0= $x; $y 0= $y; } } function Chx_sector ($img, $ox, $oy, $a, $b, $SD, $ed, $CLR) {//Draw slices $n =ceil (($ed-$SD)/angle_step); $d = $SD; List ($x 0, $y 0) =chx_getexy ($a, $b, $d); Imageline ($img, $x 0+ $ox, $y 0+ $oy, $ox, $oy, $CLR); for ($i =0; $i $d = ($d +angle_step) > $ed $ed:($d +angle_step); List ($x, $y) =chx_getexy ($a, $b, $d); Imageline ($img, $x 0+ $ox, $y 0+ $oy, $x + $ox, $y + $oy, $CLR); $x 0= $x; $y 0= $y; } Imageline ($img, $x 0+ $ox, $y 0+ $oy, $ox, $oy, $CLR); List

($ img, $ ox, $ oy, $ a, $ B, $ v, $ sd, $ ed, $ clr) {// 3d fan surfaceChx_sector ($ img, $ ox, $ oy, $ a, $ B, $ sd, $ ed, $ clr );If ($ sd List ($ R, $ G, $ B) = chx_getdarkcolor ($ img, $ clr );$ Clr = imagecolorallocate ($ img, $ R, $ G, $ B );If ($ ed> 180) $ ed = 180;List ($ sx, $ sy) = chx_getexy ($ a, $ B, $ sd );$ Sx + = $ ox;$ Sy + = $ oy;List ($ ex, $ ey) = chx_getexy ($ a, $ B, $ ed );$ Ex + =

]. val [I] {+ + T [d]. num [I]; // here is the statistics on the number of elements from l to I entering the left child. This is the data mainly used by the tree.T [d + 1]. val [+ zn] = t [d]. val [I];} Else if (t [d]. val [I]> midd) // enter the right child{T [d + 1]. val [++ yn] = t [d]. val [I];} Else{If (samed {++ Samed;++ T [d]. num [I];T [d + 1]. val [+ zn] = t [d]. val [I];} Else // you have children.T [d + 1]. val [++ yn] = t [d]. val [I];}}Build (l, mid, d + 1); // create left and right

) = drawDarkColor ($ img, $ clr );// Assign color to the image$ Clr = imagecolorallocate ($ img, $ red, $ green, $ blue );If ($ ed> 180)$ Ed = 180;List ($ sx, $ sy) = getExy ($ a, $ B, $ sd );$ Sx + = $ ox;$ Sy + = $ oy;List ($ ex, $ ey) = getExy ($ a, $ B, $ ed );$ Ex + = $ ox;$ Ey + = $ oy;Imageline ($ img, $ sx, $ sy, $ sx