Submission #1817

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1817	2013-07-17T08:35:59 Z	ainta	Art Class (IOI13_artclass)	C++	96 / 100	145 ms	8636 KB

artclass

#include "artclass.h"

int abs(int a){
	return a<0?-a:a;
}
int P[501][501],C,Q[250001],h,t,HH,WW,Count[250001];
int Ca[501],Cb[501],Cc[1001],Cd[1001];
struct A{
	int r,g,b;
}w[501][501];
struct B{
	int r,g,b;
}o[250001];
void Ins(int x,int y){
	P[x][y]=C,Q[++t]=WW*x+y;
}
int pow2(int a){
	return a*a;
}
void Do(int x,int y){
	if(x<0||y<0||x>=HH||y>=WW||P[x][y])return;
	if(pow2(abs(w[x][y].r-o[C].r))+pow2(abs(w[x][y].g-o[C].g))+pow2(abs(w[x][y].b-o[C].b))>1000)return;
	return Ins(x,y);
}
void BFS(int x,int y){
	o[C].r=w[x][y].r,o[C].g=w[x][y].g,o[C].b=w[x][y].b;
	h=t=0;
	Ins(x,y);
	while(h<t){
		Count[C]++;
		++h;
		x=Q[h]/WW,y=Q[h]%WW;
		Do(x-1,y);
		Do(x+1,y);
		Do(x,y-1);
		Do(x,y+1);
	}
}
int min(int a,int b){
	return a<b?a:b;
}
int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
	HH=H,WW=W;
	int i,j,GG=0,BB=0,RR=0;
	for(i=0;i<H;i++)
		for(j=0;j<W;j++)
			w[i][j].r=R[i][j],w[i][j].g=G[i][j],w[i][j].b=B[i][j],GG+=G[i][j],BB+=B[i][j],RR+=R[i][j];
	for(i=0;i<H;i++){
		for(j=0;j<W;j++){
			if(!P[i][j]){
				C++;
				BFS(i,j);
			}
		}
	}
	int Sa=0,Sb=0,Sc=0,Sd=0;
	double sc,sd,k,tp;
	for(i=0;i<H;i++){
		for(j=0;j<W;j++){
			if(j<W-1 && P[i][j]!=P[i][j+1])Ca[j]++,Sa++;
			if(i<H-1 && P[i][j]!=P[i+1][j])Cb[i]++,Sb++;
			if(i<H-1 && j<W-1 && P[i][j]!=P[i+1][j+1])Cc[i+j]++,Sc++;
			if(i<H-1 && j && P[i][j]!=P[i+1][j-1])Cd[i-j+W-1]++,Sd++;
		}
	}
	Sa/=W,Sb/=H,sc=Sc,sd=Sd,k=(H-1)*(W-1);
	sc/=k,sd/=k;
	int C1=0,C2=0,C3=0,C4=0,C5=0,C6=0,C7=0,C8=0;
	for(i=0;i<W-1;i++){
		if(Ca[i]-Sa>=H/3){
			C1++;
			if(i>=W/7 && i<= 6*W/7) C5++;
		}
	}
	for(i=0;i<H-1;i++){
		if(Cb[i]-Sb>=W/3){
			C2++;
			if(i>=H/7 && i<= 6*H/7) C6++;
		}
	}
	int aa=0,bb=0,cc=0,dd=0;
	for(i=0;i<H+W-1;i++){
		tp=Cc[i],k=aa-cc+1;
		aa++,dd++;
		if(aa==W)aa--,bb++;
		if(dd==H)dd--,cc++;
		if(k<min(H,W)/7)continue;
		if(tp/k>sc+0.5){
			C7++;
		}
	}
	if(C7>10)return 1;
	if(C1>1 || C2>1){
		if(C5==0 || C6==0)return 4;
		return 1;
	}
	if(Sa<W*5/9 && Sb<H*5/9)return 2;
	return 3;
}

Compilation message

artclass.cpp: In function 'int style(int, int, int (*)[500], int (*)[500], int (*)[500])':
artclass.cpp:68:16: warning: unused variable 'C3' [-Wunused-variable]
  int C1=0,C2=0,C3=0,C4=0,C5=0,C6=0,C7=0,C8=0;
                ^~
artclass.cpp:68:21: warning: unused variable 'C4' [-Wunused-variable]
  int C1=0,C2=0,C3=0,C4=0,C5=0,C6=0,C7=0,C8=0;
                     ^~
artclass.cpp:68:41: warning: unused variable 'C8' [-Wunused-variable]
  int C1=0,C2=0,C3=0,C4=0,C5=0,C6=0,C7=0,C8=0;
                                         ^~

Subtask #1

96.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	113 ms	8004 KB	Output is correct
2	Correct	145 ms	8004 KB	Output is correct
3	Correct	94 ms	8004 KB	Output is correct
4	Correct	87 ms	8636 KB	Output is correct
5	Correct	88 ms	8636 KB	Output is correct
6	Correct	110 ms	8044 KB	Output is correct
7	Correct	85 ms	8636 KB	Output is correct
8	Correct	66 ms	8300 KB	Output is correct
9	Correct	93 ms	8044 KB	Output is correct
10	Correct	79 ms	8636 KB	Output is correct
11	Correct	23 ms	8636 KB	Output is correct
12	Correct	116 ms	8044 KB	Output is correct
13	Correct	131 ms	8636 KB	Output is correct
14	Correct	51 ms	8636 KB	Output is correct
15	Correct	135 ms	8636 KB	Output is correct
16	Correct	131 ms	8636 KB	Output is correct
17	Correct	57 ms	8636 KB	Output is correct
18	Correct	88 ms	8044 KB	Output is correct
19	Correct	95 ms	8004 KB	Output is correct
20	Correct	72 ms	7520 KB	Output is correct
21	Correct	50 ms	4216 KB	Output is correct
22	Correct	72 ms	8636 KB	Output is correct
23	Correct	90 ms	8004 KB	Output is correct
24	Correct	69 ms	8636 KB	Output is correct
25	Correct	77 ms	8636 KB	Output is correct
26	Correct	63 ms	7520 KB	Output is correct
27	Correct	83 ms	8044 KB	Output is correct
28	Correct	91 ms	8004 KB	Output is correct
29	Correct	87 ms	8636 KB	Output is correct
30	Correct	72 ms	8636 KB	Output is correct
31	Incorrect	110 ms	8636 KB	Output isn't correct
32	Correct	86 ms	8044 KB	Output is correct
33	Correct	71 ms	8636 KB	Output is correct
34	Correct	83 ms	8636 KB	Output is correct
35	Correct	121 ms	7716 KB	Output is correct
36	Correct	95 ms	8004 KB	Output is correct
37	Correct	85 ms	8044 KB	Output is correct
38	Incorrect	60 ms	8636 KB	Output isn't correct
39	Correct	79 ms	8636 KB	Output is correct
40	Correct	66 ms	8636 KB	Output is correct
41	Correct	94 ms	8044 KB	Output is correct
42	Correct	64 ms	8636 KB	Output is correct
43	Correct	96 ms	8636 KB	Output is correct
44	Correct	86 ms	8044 KB	Output is correct
45	Correct	27 ms	8636 KB	Output is correct
46	Correct	81 ms	8636 KB	Output is correct
47	Correct	72 ms	8492 KB	Output is correct
48	Correct	59 ms	8636 KB	Output is correct
49	Correct	78 ms	8636 KB	Output is correct
50	Incorrect	142 ms	8004 KB	Output isn't correct
51	Correct	119 ms	8004 KB	Output is correct
52	Correct	99 ms	8300 KB	Output is correct
53	Correct	80 ms	8044 KB	Output is correct
54	Correct	87 ms	8636 KB	Output is correct
55	Incorrect	84 ms	8636 KB	Output isn't correct
56	Correct	104 ms	8004 KB	Output is correct
57	Correct	104 ms	8004 KB	Output is correct
58	Correct	108 ms	8004 KB	Output is correct
59	Correct	88 ms	7520 KB	Output is correct
60	Correct	66 ms	8636 KB	Output is correct
61	Correct	115 ms	8004 KB	Output is correct
62	Correct	65 ms	8004 KB	Output is correct
63	Correct	65 ms	8004 KB	Output is correct
64	Correct	85 ms	8636 KB	Output is correct
65	Correct	73 ms	8636 KB	Output is correct
66	Correct	109 ms	8044 KB	Output is correct
67	Correct	124 ms	8004 KB	Output is correct
68	Correct	124 ms	8636 KB	Output is correct
69	Incorrect	79 ms	8044 KB	Output isn't correct
70	Incorrect	77 ms	8044 KB	Output isn't correct
71	Correct	103 ms	7668 KB	Output is correct
72	Correct	78 ms	7736 KB	Output is correct
73	Correct	65 ms	8636 KB	Output is correct
74	Correct	85 ms	8636 KB	Output is correct
75	Incorrect	98 ms	8044 KB	Output isn't correct
76	Correct	46 ms	8636 KB	Output is correct
77	Correct	93 ms	7676 KB	Output is correct
78	Correct	74 ms	8636 KB	Output is correct
79	Correct	91 ms	8044 KB	Output is correct
80	Correct	84 ms	8636 KB	Output is correct
81	Correct	83 ms	8044 KB	Output is correct
82	Correct	76 ms	8300 KB	Output is correct
83	Correct	139 ms	7520 KB	Output is correct
84	Correct	95 ms	8044 KB	Output is correct
85	Correct	121 ms	8044 KB	Output is correct
86	Correct	102 ms	8636 KB	Output is correct
87	Correct	72 ms	8300 KB	Output is correct
88	Incorrect	96 ms	8636 KB	Output isn't correct
89	Correct	116 ms	8044 KB	Output is correct
90	Correct	129 ms	8044 KB	Output is correct
91	Incorrect	52 ms	8044 KB	Output isn't correct
92	Correct	74 ms	8636 KB	Output is correct
93	Correct	78 ms	8636 KB	Output is correct
94	Correct	84 ms	8636 KB	Output is correct
95	Incorrect	85 ms	8044 KB	Output isn't correct
96	Correct	96 ms	8004 KB	Output is correct
97	Correct	109 ms	8636 KB	Output is correct
98	Correct	82 ms	8044 KB	Output is correct
99	Correct	92 ms	8636 KB	Output is correct
100	Correct	79 ms	8004 KB	Output is correct
101	Incorrect	97 ms	8636 KB	Output isn't correct
102	Incorrect	103 ms	8636 KB	Output isn't correct