Submission #1824

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1824	2013-07-17T08:47:45 Z	ainta	Art Class (IOI13_artclass)	C++	98 / 100	142 ms	8700 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*7/11 && Sb<H*7/11)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	72 ms	8700 KB	Output is correct
2	Correct	58 ms	8316 KB	Output is correct
3	Correct	115 ms	8700 KB	Output is correct
4	Correct	80 ms	8700 KB	Output is correct
5	Correct	109 ms	8040 KB	Output is correct
6	Correct	75 ms	8700 KB	Output is correct
7	Correct	97 ms	8044 KB	Output is correct
8	Correct	97 ms	7472 KB	Output is correct
9	Correct	97 ms	8700 KB	Output is correct
10	Correct	94 ms	8700 KB	Output is correct
11	Correct	96 ms	8044 KB	Output is correct
12	Correct	82 ms	8316 KB	Output is correct
13	Correct	73 ms	8700 KB	Output is correct
14	Correct	111 ms	8700 KB	Output is correct
15	Correct	110 ms	8040 KB	Output is correct
16	Correct	111 ms	8040 KB	Output is correct
17	Correct	85 ms	8700 KB	Output is correct
18	Correct	118 ms	8040 KB	Output is correct
19	Correct	76 ms	8700 KB	Output is correct
20	Correct	123 ms	8044 KB	Output is correct
21	Correct	57 ms	4216 KB	Output is correct
22	Correct	92 ms	8700 KB	Output is correct
23	Correct	67 ms	8040 KB	Output is correct
24	Correct	103 ms	8040 KB	Output is correct
25	Correct	68 ms	8040 KB	Output is correct
26	Correct	77 ms	8700 KB	Output is correct
27	Correct	135 ms	8044 KB	Output is correct
28	Correct	78 ms	8700 KB	Output is correct
29	Correct	67 ms	8700 KB	Output is correct
30	Correct	97 ms	8700 KB	Output is correct
31	Incorrect	89 ms	8700 KB	Output isn't correct
32	Correct	94 ms	8040 KB	Output is correct
33	Correct	50 ms	8700 KB	Output is correct
34	Correct	72 ms	8044 KB	Output is correct
35	Correct	90 ms	8700 KB	Output is correct
36	Correct	89 ms	8700 KB	Output is correct
37	Correct	83 ms	8700 KB	Output is correct
38	Correct	101 ms	8040 KB	Output is correct
39	Correct	92 ms	7840 KB	Output is correct
40	Incorrect	57 ms	8044 KB	Output isn't correct
41	Correct	76 ms	8700 KB	Output is correct
42	Incorrect	100 ms	8044 KB	Output isn't correct
43	Correct	100 ms	8700 KB	Output is correct
44	Correct	103 ms	8040 KB	Output is correct
45	Correct	87 ms	8700 KB	Output is correct
46	Correct	106 ms	8044 KB	Output is correct
47	Correct	71 ms	8700 KB	Output is correct
48	Correct	79 ms	8700 KB	Output is correct
49	Correct	88 ms	8040 KB	Output is correct
50	Correct	102 ms	8044 KB	Output is correct
51	Correct	94 ms	8044 KB	Output is correct
52	Correct	59 ms	8040 KB	Output is correct
53	Correct	99 ms	7584 KB	Output is correct
54	Incorrect	78 ms	8700 KB	Output isn't correct
55	Correct	50 ms	8700 KB	Output is correct
56	Correct	32 ms	8700 KB	Output is correct
57	Correct	70 ms	8700 KB	Output is correct
58	Correct	79 ms	8044 KB	Output is correct
59	Correct	102 ms	7840 KB	Output is correct
60	Correct	89 ms	8040 KB	Output is correct
61	Incorrect	139 ms	8700 KB	Output isn't correct
62	Correct	86 ms	8044 KB	Output is correct
63	Correct	111 ms	8040 KB	Output is correct
64	Correct	76 ms	8392 KB	Output is correct
65	Correct	89 ms	7416 KB	Output is correct
66	Correct	93 ms	8700 KB	Output is correct
67	Correct	104 ms	8040 KB	Output is correct
68	Incorrect	91 ms	8700 KB	Output isn't correct
69	Incorrect	131 ms	8040 KB	Output isn't correct
70	Correct	44 ms	8700 KB	Output is correct
71	Correct	66 ms	7472 KB	Output is correct
72	Correct	82 ms	8700 KB	Output is correct
73	Correct	89 ms	8044 KB	Output is correct
74	Correct	109 ms	7840 KB	Output is correct
75	Correct	55 ms	8700 KB	Output is correct
76	Correct	66 ms	8316 KB	Output is correct
77	Correct	94 ms	8044 KB	Output is correct
78	Correct	109 ms	8044 KB	Output is correct
79	Correct	99 ms	7508 KB	Output is correct
80	Correct	83 ms	8044 KB	Output is correct
81	Correct	52 ms	8700 KB	Output is correct
82	Correct	78 ms	8700 KB	Output is correct
83	Incorrect	114 ms	8700 KB	Output isn't correct
84	Correct	116 ms	8700 KB	Output is correct
85	Correct	97 ms	8044 KB	Output is correct
86	Correct	84 ms	8044 KB	Output is correct
87	Correct	84 ms	8044 KB	Output is correct
88	Correct	86 ms	8044 KB	Output is correct
89	Correct	29 ms	8700 KB	Output is correct
90	Correct	96 ms	8040 KB	Output is correct
91	Incorrect	87 ms	8700 KB	Output isn't correct
92	Correct	100 ms	8700 KB	Output is correct
93	Correct	104 ms	8700 KB	Output is correct
94	Correct	96 ms	8044 KB	Output is correct
95	Incorrect	102 ms	8700 KB	Output isn't correct
96	Correct	83 ms	8040 KB	Output is correct
97	Correct	67 ms	8700 KB	Output is correct
98	Incorrect	75 ms	8700 KB	Output isn't correct
99	Correct	87 ms	8044 KB	Output is correct
100	Correct	142 ms	8044 KB	Output is correct
101	Correct	76 ms	8316 KB	Output is correct
102	Correct	107 ms	8700 KB	Output is correct