Submission #1826

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1826	2013-07-17T08:48:52 Z	ainta	Art Class (IOI13_artclass)	C++	100 / 100	149 ms	8572 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*7/12 && Sb<H*7/12)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

100.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	118 ms	8572 KB	Output is correct
2	Correct	81 ms	8572 KB	Output is correct
3	Incorrect	98 ms	8572 KB	Output isn't correct
4	Correct	92 ms	7956 KB	Output is correct
5	Correct	101 ms	8188 KB	Output is correct
6	Correct	110 ms	8572 KB	Output is correct
7	Correct	97 ms	8188 KB	Output is correct
8	Correct	59 ms	7956 KB	Output is correct
9	Correct	94 ms	8188 KB	Output is correct
10	Correct	79 ms	7440 KB	Output is correct
11	Correct	108 ms	8188 KB	Output is correct
12	Correct	73 ms	8572 KB	Output is correct
13	Correct	101 ms	7956 KB	Output is correct
14	Correct	80 ms	8572 KB	Output is correct
15	Correct	62 ms	8572 KB	Output is correct
16	Correct	96 ms	8572 KB	Output is correct
17	Correct	91 ms	8572 KB	Output is correct
18	Correct	96 ms	7956 KB	Output is correct
19	Correct	144 ms	8572 KB	Output is correct
20	Correct	87 ms	8572 KB	Output is correct
21	Correct	44 ms	8572 KB	Output is correct
22	Correct	91 ms	8188 KB	Output is correct
23	Correct	105 ms	8188 KB	Output is correct
24	Correct	30 ms	8572 KB	Output is correct
25	Correct	72 ms	8572 KB	Output is correct
26	Correct	80 ms	8572 KB	Output is correct
27	Correct	91 ms	8188 KB	Output is correct
28	Correct	110 ms	8572 KB	Output is correct
29	Correct	97 ms	8572 KB	Output is correct
30	Correct	48 ms	8572 KB	Output is correct
31	Correct	76 ms	8572 KB	Output is correct
32	Correct	118 ms	7772 KB	Output is correct
33	Correct	67 ms	8572 KB	Output is correct
34	Correct	73 ms	8572 KB	Output is correct
35	Correct	94 ms	8188 KB	Output is correct
36	Correct	66 ms	8316 KB	Output is correct
37	Correct	97 ms	7956 KB	Output is correct
38	Correct	67 ms	8572 KB	Output is correct
39	Correct	101 ms	7956 KB	Output is correct
40	Correct	71 ms	4316 KB	Output is correct
41	Correct	99 ms	8572 KB	Output is correct
42	Correct	80 ms	8188 KB	Output is correct
43	Correct	105 ms	8188 KB	Output is correct
44	Correct	78 ms	8572 KB	Output is correct
45	Correct	64 ms	7956 KB	Output is correct
46	Correct	57 ms	8316 KB	Output is correct
47	Correct	111 ms	7956 KB	Output is correct
48	Correct	84 ms	8572 KB	Output is correct
49	Correct	63 ms	7448 KB	Output is correct
50	Incorrect	104 ms	8572 KB	Output isn't correct
51	Correct	90 ms	8572 KB	Output is correct
52	Correct	91 ms	8188 KB	Output is correct
53	Incorrect	72 ms	8572 KB	Output isn't correct
54	Correct	84 ms	7956 KB	Output is correct
55	Correct	67 ms	8572 KB	Output is correct
56	Correct	93 ms	8572 KB	Output is correct
57	Correct	93 ms	7956 KB	Output is correct
58	Correct	80 ms	7956 KB	Output is correct
59	Correct	99 ms	7956 KB	Output is correct
60	Correct	105 ms	8572 KB	Output is correct
61	Correct	101 ms	8572 KB	Output is correct
62	Correct	75 ms	8572 KB	Output is correct
63	Correct	65 ms	8316 KB	Output is correct
64	Correct	90 ms	7956 KB	Output is correct
65	Correct	86 ms	7956 KB	Output is correct
66	Incorrect	83 ms	8188 KB	Output isn't correct
67	Correct	84 ms	8572 KB	Output is correct
68	Correct	96 ms	8188 KB	Output is correct
69	Correct	117 ms	8572 KB	Output is correct
70	Correct	84 ms	8188 KB	Output is correct
71	Correct	24 ms	8572 KB	Output is correct
72	Incorrect	73 ms	8572 KB	Output isn't correct
73	Correct	91 ms	8572 KB	Output is correct
74	Correct	90 ms	8188 KB	Output is correct
75	Correct	112 ms	8572 KB	Output is correct
76	Incorrect	92 ms	8572 KB	Output isn't correct
77	Correct	83 ms	8572 KB	Output is correct
78	Correct	83 ms	8188 KB	Output is correct
79	Correct	106 ms	7956 KB	Output is correct
80	Incorrect	84 ms	8572 KB	Output isn't correct
81	Incorrect	114 ms	7956 KB	Output isn't correct
82	Correct	114 ms	7460 KB	Output is correct
83	Incorrect	63 ms	8188 KB	Output isn't correct
84	Correct	67 ms	8316 KB	Output is correct
85	Correct	66 ms	8316 KB	Output is correct
86	Correct	121 ms	7672 KB	Output is correct
87	Correct	85 ms	8572 KB	Output is correct
88	Correct	107 ms	8188 KB	Output is correct
89	Correct	73 ms	7772 KB	Output is correct
90	Incorrect	81 ms	8188 KB	Output isn't correct
91	Correct	73 ms	8572 KB	Output is correct
92	Correct	82 ms	8188 KB	Output is correct
93	Correct	111 ms	8188 KB	Output is correct
94	Correct	102 ms	8188 KB	Output is correct
95	Correct	93 ms	7448 KB	Output is correct
96	Correct	91 ms	7956 KB	Output is correct
97	Correct	124 ms	7544 KB	Output is correct
98	Correct	62 ms	8572 KB	Output is correct
99	Correct	103 ms	8572 KB	Output is correct
100	Correct	89 ms	8572 KB	Output is correct
101	Correct	110 ms	8188 KB	Output is correct
102	Correct	149 ms	7956 KB	Output is correct