답안 #5691

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
5691	2014-05-13T07:11:08 Z	cki86201	UFO (IZhO14_ufo)	C++	100 / 100	1719 ms	76260 KB

ufo

#include<stdio.h>
#include<vector>
using namespace std;

vector<vector <int> > inp;
int N, M, R, K, P;

struct node{
	node(){v=x=0,link[0]=link[1]=0;}
	int v, x;
	node *link[2];
	inline void pushup(){
		x = max(v, max(link[0] ? link[0]->x : 0, link[1] ? link[1]->x : 0));
	}
	void build(int xy,int cl,int s,int d){
		int m = (s+d) >> 1;
		v = (xy ? inp[m][cl] : inp[cl][m]);
		if(s<m){
			link[0] = new node();
			link[0]->build(xy, cl, s, m-1);
		}
		if(m<d){
			link[1] = new node();
			link[1]->build(xy, cl, m+1, d);
		}
		pushup();
	}
	void update(int w,int s,int d){
		int m = (s+d)>>1;
		if(w == m)--v;
		else if(w<m)link[0]->update(w, s, m-1);
		else link[1]->update(w, m+1, d);
		pushup();
	}
	int get_min(int h,int s,int d,int L){
		if(x < h)return -1;
		int m = (s+d)>>1;
		if(link[0] && L < m-1){
			int t = link[0]->get_min(h, s, m-1, L);
			if(t != -1)return t;
		}
		if(L < m && v >= h)return m;
		if(link[1]){
			int t = link[1]->get_min(h, m+1, d, L);
			if(t != -1)return t;
		}
		return -1;
	}
	int get_max(int h,int s,int d,int L){
		if(x < h)return -1;
		int m = (s+d)>>1;
		if(link[1] && L > m+1){
			int t = link[1]->get_max(h, m+1, d, L);
			if(t != -1)return t;
		}
		if(L > m && v >= h)return m;
		if(link[0]){
			int t = link[0]->get_max(h, s, m-1, L);
			if(t != -1)return t;
		}
		return -1;
	}
};

vector <node*> xr, yr;

void update(int x,int y)
{
	inp[x][y]--;
	xr[x]->update(y, 0, M-1);
	yr[y]->update(x, 0, N-1);
}

int main()
{
	scanf("%d%d%d%d%d",&N,&M,&R,&K,&P);
	int i, j;
	inp.resize(N);
	for(i=0;i<N;i++){
		inp[i].resize(M);
		for(j=0;j<M;j++)scanf("%d",&inp[i][j]);
	}
	xr.resize(N), yr.resize(M);
	for(i=0;i<N;i++)xr[i] = new node(), xr[i]->build(0, i, 0, M-1);
	for(i=0;i<M;i++)yr[i] = new node(), yr[i]->build(1, i, 0, N-1);
	for(int tt=0;tt<K;tt++){
		char c[2];
		int w, h;
		scanf("%s%d%d",c,&w,&h);
		--w;
		if(c[0] == 'N'){
			int t = -1;
			for(i=0;i<R;i++){
				t = yr[w]->get_min(h, 0, N-1, t);
				if(t == -1)break;
				update(t, w);
			}
		}
		else if(c[0] == 'S'){
			int t = N;
			for(i=0;i<R;i++){
				t = yr[w]->get_max(h, 0, N-1, t);
				if(t == -1)break;
				update(t, w);
			}
		}
		else if(c[0] == 'W'){
			int t = -1;
			for(i=0;i<R;i++){
				t = xr[w]->get_min(h, 0, M-1, t);
				if(t == -1)break;
				update(w, t);
			}
		}
		else{
			int t = M;
			for(i=0;i<R;i++){
				t = xr[w]->get_max(h, 0, M-1, t);
				if(t == -1)break;
				update(w, t);
			}
		}
	}
	for(i=0;i<N;i++){
		int sum = 0;
		for(j=0;j<P;j++)sum += inp[i][j];
		int save = inp[i][0];
		inp[i][0] = sum;
		for(j=0;j<M-P;j++){
			sum += inp[i][j+P] - save;
			save = inp[i][j+1];
			inp[i][j+1] = sum;
		}
	}
	for(j=0;j<M-P+1;j++){
		int sum = 0;
		for(i=0;i<P;i++)sum += inp[i][j];
		int save = inp[0][j];
		inp[0][j] = sum;
		for(i=0;i<N-P;i++){
			sum += inp[i+P][j] - save;
			save = inp[i+1][j];
			inp[i+1][j] = sum;
		}
	}
	int ans = 0;
	for(i=0;i<N-P+1;i++)for(j=0;j<M-P+1;j++)ans = max(ans, inp[i][j]);
	printf("%d",ans);
	return 0;
}

Compilation message

ufo.cpp: In function 'int main()':
ufo.cpp:76:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d%d",&N,&M,&R,&K,&P);
                                    ^
ufo.cpp:81:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   for(j=0;j<M;j++)scanf("%d",&inp[i][j]);
                                         ^
ufo.cpp:89:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s%d%d",c,&w,&h);
                          ^

Subtask #1

100.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	1968 KB	Output is correct
2	Correct	0 ms	1968 KB	Output is correct
3	Correct	0 ms	2232 KB	Output is correct
4	Correct	16 ms	2628 KB	Output is correct
5	Correct	113 ms	5408 KB	Output is correct
6	Correct	376 ms	34572 KB	Output is correct
7	Correct	376 ms	69240 KB	Output is correct
8	Correct	259 ms	69240 KB	Output is correct
9	Correct	696 ms	68848 KB	Output is correct
10	Correct	726 ms	69240 KB	Output is correct
11	Correct	556 ms	66744 KB	Output is correct
12	Correct	789 ms	69240 KB	Output is correct
13	Correct	899 ms	72284 KB	Output is correct
14	Correct	679 ms	66744 KB	Output is correct
15	Correct	979 ms	69240 KB	Output is correct
16	Correct	329 ms	66744 KB	Output is correct
17	Correct	1719 ms	72284 KB	Output is correct
18	Correct	329 ms	63804 KB	Output is correct
19	Correct	403 ms	70020 KB	Output is correct
20	Correct	1036 ms	76260 KB	Output is correct