Submission #1825

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1825	2013-07-17T08:48:17 Z	ainta	Art Class (IOI13_artclass)	C++	93 / 100	154 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*2/3 && Sb<H*2/3)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

93.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	52 ms	4216 KB	Output is correct
2	Incorrect	92 ms	8572 KB	Output isn't correct
3	Correct	71 ms	8572 KB	Output is correct
4	Correct	84 ms	8044 KB	Output is correct
5	Correct	87 ms	8044 KB	Output is correct
6	Correct	71 ms	7476 KB	Output is correct
7	Incorrect	80 ms	8572 KB	Output isn't correct
8	Correct	79 ms	8572 KB	Output is correct
9	Incorrect	86 ms	8572 KB	Output isn't correct
10	Correct	120 ms	8040 KB	Output is correct
11	Correct	118 ms	8044 KB	Output is correct
12	Correct	99 ms	8040 KB	Output is correct
13	Correct	82 ms	8572 KB	Output is correct
14	Correct	75 ms	8040 KB	Output is correct
15	Correct	98 ms	8572 KB	Output is correct
16	Correct	84 ms	8572 KB	Output is correct
17	Correct	106 ms	8572 KB	Output is correct
18	Correct	94 ms	8044 KB	Output is correct
19	Incorrect	73 ms	8572 KB	Output isn't correct
20	Correct	57 ms	8572 KB	Output is correct
21	Incorrect	153 ms	8572 KB	Output isn't correct
22	Correct	89 ms	8572 KB	Output is correct
23	Correct	111 ms	8044 KB	Output is correct
24	Correct	90 ms	8572 KB	Output is correct
25	Correct	77 ms	8044 KB	Output is correct
26	Correct	94 ms	7740 KB	Output is correct
27	Correct	122 ms	8572 KB	Output is correct
28	Correct	108 ms	8044 KB	Output is correct
29	Correct	95 ms	8044 KB	Output is correct
30	Correct	76 ms	8572 KB	Output is correct
31	Correct	140 ms	8572 KB	Output is correct
32	Correct	51 ms	8572 KB	Output is correct
33	Correct	69 ms	8316 KB	Output is correct
34	Correct	95 ms	8572 KB	Output is correct
35	Correct	43 ms	8572 KB	Output is correct
36	Correct	92 ms	8572 KB	Output is correct
37	Correct	119 ms	7476 KB	Output is correct
38	Correct	104 ms	8044 KB	Output is correct
39	Correct	105 ms	8040 KB	Output is correct
40	Correct	72 ms	8316 KB	Output is correct
41	Correct	64 ms	8040 KB	Output is correct
42	Correct	100 ms	8040 KB	Output is correct
43	Incorrect	85 ms	8572 KB	Output isn't correct
44	Incorrect	98 ms	8572 KB	Output isn't correct
45	Incorrect	154 ms	8572 KB	Output isn't correct
46	Correct	23 ms	8572 KB	Output is correct
47	Correct	61 ms	8572 KB	Output is correct
48	Correct	104 ms	8040 KB	Output is correct
49	Correct	69 ms	8572 KB	Output is correct
50	Correct	27 ms	8572 KB	Output is correct
51	Correct	104 ms	7740 KB	Output is correct
52	Correct	102 ms	7396 KB	Output is correct
53	Correct	76 ms	8572 KB	Output is correct
54	Correct	83 ms	8572 KB	Output is correct
55	Correct	86 ms	8044 KB	Output is correct
56	Correct	98 ms	7532 KB	Output is correct
57	Incorrect	94 ms	8572 KB	Output isn't correct
58	Correct	127 ms	8040 KB	Output is correct
59	Correct	105 ms	8044 KB	Output is correct
60	Correct	91 ms	8044 KB	Output is correct
61	Correct	89 ms	8044 KB	Output is correct
62	Correct	79 ms	8040 KB	Output is correct
63	Correct	80 ms	8316 KB	Output is correct
64	Correct	59 ms	8572 KB	Output is correct
65	Correct	102 ms	8572 KB	Output is correct
66	Correct	97 ms	8572 KB	Output is correct
67	Correct	92 ms	8044 KB	Output is correct
68	Incorrect	86 ms	8572 KB	Output isn't correct
69	Correct	84 ms	8040 KB	Output is correct
70	Correct	67 ms	8316 KB	Output is correct
71	Correct	91 ms	8044 KB	Output is correct
72	Correct	77 ms	8316 KB	Output is correct
73	Correct	102 ms	8040 KB	Output is correct
74	Correct	128 ms	8044 KB	Output is correct
75	Correct	92 ms	8044 KB	Output is correct
76	Incorrect	71 ms	8044 KB	Output isn't correct
77	Correct	74 ms	8572 KB	Output is correct
78	Incorrect	110 ms	8040 KB	Output isn't correct
79	Correct	99 ms	8572 KB	Output is correct
80	Correct	104 ms	8040 KB	Output is correct
81	Correct	95 ms	8040 KB	Output is correct
82	Correct	95 ms	7636 KB	Output is correct
83	Correct	95 ms	8044 KB	Output is correct
84	Correct	79 ms	8044 KB	Output is correct
85	Correct	82 ms	8572 KB	Output is correct
86	Correct	98 ms	8572 KB	Output is correct
87	Correct	136 ms	8040 KB	Output is correct
88	Correct	78 ms	8572 KB	Output is correct
89	Correct	73 ms	8572 KB	Output is correct
90	Correct	44 ms	8572 KB	Output is correct
91	Correct	121 ms	8572 KB	Output is correct
92	Correct	108 ms	8040 KB	Output is correct
93	Correct	79 ms	8044 KB	Output is correct
94	Correct	100 ms	8040 KB	Output is correct
95	Correct	86 ms	8044 KB	Output is correct
96	Incorrect	99 ms	8572 KB	Output isn't correct
97	Correct	95 ms	7740 KB	Output is correct
98	Correct	90 ms	8572 KB	Output is correct
99	Correct	74 ms	8572 KB	Output is correct
100	Correct	102 ms	8572 KB	Output is correct
101	Correct	122 ms	8040 KB	Output is correct
102	Correct	85 ms	8044 KB	Output is correct