Submission #1827

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1827	2013-07-17T08:51:04 Z	ainta	Art Class (IOI13_artclass)	C++	98 / 100	151 ms	8576 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++;
		}
	}
	for(i=0;i<H+W-1;i++){
		tp=Cd[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>sd+0.5){
			C8++;
		}
	}
	if(C7||C8)return 1;
	if(C1>1 || C2>1){
		if(C5==0 || C6==0)return 4;
		return 1;
	}
	if(Sa<W*4/7 && Sb<H*4/7)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;
                     ^~

Subtask #1

98.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	83 ms	8576 KB	Output is correct
2	Correct	104 ms	8576 KB	Output is correct
3	Correct	90 ms	8196 KB	Output is correct
4	Correct	84 ms	7848 KB	Output is correct
5	Correct	105 ms	7996 KB	Output is correct
6	Correct	90 ms	8196 KB	Output is correct
7	Incorrect	78 ms	8196 KB	Output isn't correct
8	Incorrect	118 ms	8576 KB	Output isn't correct
9	Correct	53 ms	8576 KB	Output is correct
10	Correct	84 ms	8196 KB	Output is correct
11	Correct	85 ms	8576 KB	Output is correct
12	Correct	76 ms	8576 KB	Output is correct
13	Correct	92 ms	8576 KB	Output is correct
14	Correct	58 ms	8364 KB	Output is correct
15	Correct	100 ms	8576 KB	Output is correct
16	Correct	78 ms	7524 KB	Output is correct
17	Correct	87 ms	8196 KB	Output is correct
18	Correct	86 ms	8196 KB	Output is correct
19	Correct	91 ms	8576 KB	Output is correct
20	Correct	85 ms	8196 KB	Output is correct
21	Correct	108 ms	7724 KB	Output is correct
22	Correct	75 ms	4220 KB	Output is correct
23	Correct	50 ms	8576 KB	Output is correct
24	Correct	144 ms	7996 KB	Output is correct
25	Correct	112 ms	8576 KB	Output is correct
26	Correct	95 ms	7996 KB	Output is correct
27	Correct	78 ms	8196 KB	Output is correct
28	Correct	75 ms	8364 KB	Output is correct
29	Correct	70 ms	7524 KB	Output is correct
30	Correct	100 ms	8196 KB	Output is correct
31	Correct	100 ms	8576 KB	Output is correct
32	Correct	79 ms	8196 KB	Output is correct
33	Incorrect	101 ms	8576 KB	Output isn't correct
34	Incorrect	102 ms	8196 KB	Output isn't correct
35	Correct	110 ms	7996 KB	Output is correct
36	Correct	71 ms	8576 KB	Output is correct
37	Correct	56 ms	8576 KB	Output is correct
38	Correct	98 ms	7996 KB	Output is correct
39	Correct	43 ms	8576 KB	Output is correct
40	Correct	80 ms	8576 KB	Output is correct
41	Correct	95 ms	7996 KB	Output is correct
42	Correct	72 ms	7996 KB	Output is correct
43	Correct	57 ms	8576 KB	Output is correct
44	Correct	63 ms	8576 KB	Output is correct
45	Correct	99 ms	8576 KB	Output is correct
46	Correct	106 ms	7996 KB	Output is correct
47	Incorrect	68 ms	8576 KB	Output isn't correct
48	Correct	84 ms	8576 KB	Output is correct
49	Correct	66 ms	8576 KB	Output is correct
50	Correct	72 ms	8364 KB	Output is correct
51	Correct	64 ms	7996 KB	Output is correct
52	Correct	100 ms	8576 KB	Output is correct
53	Correct	24 ms	8576 KB	Output is correct
54	Correct	151 ms	7524 KB	Output is correct
55	Correct	86 ms	8196 KB	Output is correct
56	Correct	114 ms	8576 KB	Output is correct
57	Correct	113 ms	8196 KB	Output is correct
58	Correct	79 ms	8576 KB	Output is correct
59	Correct	131 ms	7996 KB	Output is correct
60	Correct	87 ms	8364 KB	Output is correct
61	Correct	102 ms	8576 KB	Output is correct
62	Correct	71 ms	8576 KB	Output is correct
63	Correct	101 ms	8576 KB	Output is correct
64	Correct	89 ms	8576 KB	Output is correct
65	Incorrect	54 ms	8196 KB	Output isn't correct
66	Correct	84 ms	8196 KB	Output is correct
67	Correct	82 ms	8196 KB	Output is correct
68	Correct	134 ms	8196 KB	Output is correct
69	Correct	147 ms	8576 KB	Output is correct
70	Correct	120 ms	7848 KB	Output is correct
71	Correct	100 ms	8576 KB	Output is correct
72	Correct	85 ms	8196 KB	Output is correct
73	Correct	106 ms	8576 KB	Output is correct
74	Correct	112 ms	7996 KB	Output is correct
75	Correct	124 ms	7996 KB	Output is correct
76	Incorrect	91 ms	8576 KB	Output isn't correct
77	Correct	84 ms	8364 KB	Output is correct
78	Incorrect	136 ms	7996 KB	Output isn't correct
79	Correct	106 ms	7552 KB	Output is correct
80	Correct	68 ms	8576 KB	Output is correct
81	Correct	58 ms	8576 KB	Output is correct
82	Correct	63 ms	7996 KB	Output is correct
83	Correct	103 ms	8576 KB	Output is correct
84	Correct	106 ms	7996 KB	Output is correct
85	Correct	97 ms	7996 KB	Output is correct
86	Correct	92 ms	8196 KB	Output is correct
87	Correct	83 ms	8196 KB	Output is correct
88	Correct	86 ms	8576 KB	Output is correct
89	Correct	60 ms	8576 KB	Output is correct
90	Correct	117 ms	8576 KB	Output is correct
91	Correct	82 ms	8576 KB	Output is correct
92	Correct	125 ms	8576 KB	Output is correct
93	Incorrect	103 ms	8576 KB	Output isn't correct
94	Correct	95 ms	8576 KB	Output is correct
95	Correct	94 ms	7848 KB	Output is correct
96	Correct	81 ms	8196 KB	Output is correct
97	Correct	81 ms	8196 KB	Output is correct
98	Incorrect	73 ms	8576 KB	Output isn't correct
99	Correct	101 ms	7996 KB	Output is correct
100	Correct	76 ms	7996 KB	Output is correct
101	Incorrect	75 ms	8196 KB	Output isn't correct
102	Correct	101 ms	8576 KB	Output is correct