Submission #1819

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1819	2013-07-17T08:38:08 Z	ainta	Art Class (IOI13_artclass)	C++	96 / 100	177 ms	8616 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>1)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	89 ms	8008 KB	Output is correct
2	Correct	91 ms	8008 KB	Output is correct
3	Correct	88 ms	8008 KB	Output is correct
4	Correct	71 ms	8008 KB	Output is correct
5	Correct	98 ms	8616 KB	Output is correct
6	Correct	73 ms	8316 KB	Output is correct
7	Correct	88 ms	8616 KB	Output is correct
8	Correct	66 ms	8616 KB	Output is correct
9	Correct	99 ms	8008 KB	Output is correct
10	Correct	71 ms	8616 KB	Output is correct
11	Correct	87 ms	8060 KB	Output is correct
12	Correct	83 ms	8060 KB	Output is correct
13	Correct	95 ms	8060 KB	Output is correct
14	Correct	77 ms	8616 KB	Output is correct
15	Correct	97 ms	8008 KB	Output is correct
16	Correct	177 ms	7700 KB	Output is correct
17	Correct	90 ms	8320 KB	Output is correct
18	Correct	60 ms	8616 KB	Output is correct
19	Correct	99 ms	8060 KB	Output is correct
20	Correct	142 ms	8008 KB	Output is correct
21	Correct	79 ms	8616 KB	Output is correct
22	Correct	92 ms	8060 KB	Output is correct
23	Correct	40 ms	8616 KB	Output is correct
24	Incorrect	86 ms	8060 KB	Output isn't correct
25	Correct	79 ms	8616 KB	Output is correct
26	Correct	100 ms	8616 KB	Output is correct
27	Incorrect	82 ms	8616 KB	Output isn't correct
28	Correct	87 ms	8616 KB	Output is correct
29	Correct	93 ms	8060 KB	Output is correct
30	Correct	80 ms	8616 KB	Output is correct
31	Incorrect	92 ms	8616 KB	Output isn't correct
32	Correct	91 ms	8060 KB	Output is correct
33	Incorrect	119 ms	8008 KB	Output isn't correct
34	Correct	92 ms	8008 KB	Output is correct
35	Correct	58 ms	8616 KB	Output is correct
36	Correct	101 ms	8616 KB	Output is correct
37	Correct	100 ms	8060 KB	Output is correct
38	Correct	96 ms	8616 KB	Output is correct
39	Correct	82 ms	8616 KB	Output is correct
40	Correct	67 ms	8616 KB	Output is correct
41	Correct	108 ms	8008 KB	Output is correct
42	Correct	91 ms	8616 KB	Output is correct
43	Correct	57 ms	8616 KB	Output is correct
44	Correct	86 ms	8008 KB	Output is correct
45	Correct	85 ms	8616 KB	Output is correct
46	Correct	102 ms	8616 KB	Output is correct
47	Correct	92 ms	8008 KB	Output is correct
48	Correct	64 ms	8616 KB	Output is correct
49	Incorrect	54 ms	8060 KB	Output isn't correct
50	Correct	92 ms	8616 KB	Output is correct
51	Correct	107 ms	8616 KB	Output is correct
52	Correct	86 ms	8008 KB	Output is correct
53	Correct	55 ms	8616 KB	Output is correct
54	Correct	143 ms	8616 KB	Output is correct
55	Correct	88 ms	7544 KB	Output is correct
56	Correct	93 ms	8060 KB	Output is correct
57	Correct	62 ms	8616 KB	Output is correct
58	Incorrect	82 ms	8060 KB	Output isn't correct
59	Incorrect	136 ms	8616 KB	Output isn't correct
60	Correct	103 ms	8008 KB	Output is correct
61	Correct	50 ms	4216 KB	Output is correct
62	Correct	65 ms	8008 KB	Output is correct
63	Correct	100 ms	7544 KB	Output is correct
64	Correct	74 ms	8616 KB	Output is correct
65	Incorrect	78 ms	8060 KB	Output isn't correct
66	Correct	118 ms	8008 KB	Output is correct
67	Correct	79 ms	8616 KB	Output is correct
68	Correct	86 ms	8060 KB	Output is correct
69	Incorrect	88 ms	8060 KB	Output isn't correct
70	Correct	102 ms	7700 KB	Output is correct
71	Correct	90 ms	8060 KB	Output is correct
72	Correct	57 ms	8316 KB	Output is correct
73	Correct	82 ms	8616 KB	Output is correct
74	Correct	107 ms	8616 KB	Output is correct
75	Correct	110 ms	8060 KB	Output is correct
76	Correct	63 ms	8616 KB	Output is correct
77	Incorrect	105 ms	8616 KB	Output isn't correct
78	Correct	75 ms	8616 KB	Output is correct
79	Correct	96 ms	8060 KB	Output is correct
80	Correct	62 ms	8316 KB	Output is correct
81	Correct	89 ms	7544 KB	Output is correct
82	Correct	24 ms	8616 KB	Output is correct
83	Correct	97 ms	8008 KB	Output is correct
84	Correct	59 ms	7544 KB	Output is correct
85	Correct	92 ms	8616 KB	Output is correct
86	Correct	95 ms	8616 KB	Output is correct
87	Correct	96 ms	8616 KB	Output is correct
88	Correct	51 ms	8316 KB	Output is correct
89	Correct	93 ms	8060 KB	Output is correct
90	Correct	91 ms	8060 KB	Output is correct
91	Correct	60 ms	8616 KB	Output is correct
92	Correct	115 ms	7544 KB	Output is correct
93	Incorrect	93 ms	8616 KB	Output isn't correct
94	Correct	78 ms	8616 KB	Output is correct
95	Incorrect	90 ms	8616 KB	Output isn't correct
96	Correct	28 ms	8616 KB	Output is correct
97	Correct	88 ms	7700 KB	Output is correct
98	Correct	93 ms	8616 KB	Output is correct
99	Correct	128 ms	8008 KB	Output is correct
100	Correct	103 ms	8060 KB	Output is correct
101	Correct	111 ms	8060 KB	Output is correct
102	Correct	90 ms	8060 KB	Output is correct