답안 #128799

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
128799	2019-07-11T09:44:52 Z	onjo0127	영역 (JOI16_ho_t4)	C++11	38 / 100	356 ms	48620 KB

2016_ho_t4

#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;
using pli = pair<long long, int>;
using tiii = tuple<int, int, int>;
#define X first
#define Y second

const int le9 = 1e9;
const pii INF = {-1e9, -1e9};

pii df; int dx, dy;
int N, K, P[1000009];
int x1[4][1000009], x2[4][1000009], y[1000009];
char S[1000009];
set<pii> st;

void mv(pii &CR, char c) {
	if(c == 'S') --CR.Y;
	if(c == 'N') ++CR.Y;
	if(c == 'W') --CR.X;
	if(c == 'E') ++CR.X;
}

void input() {
	scanf("%d%d",&N,&K);
	for(int i=1; i<=N; i++) {
		scanf(" %c", &S[i]);
		mv(df, S[i]);
	}
	if(df.X < 0) {
		df.X = -df.X;
		for(int i=1; i<=N; i++) {
			if(S[i] == 'W') S[i] = 'E';
			else if(S[i] == 'E') S[i] = 'W';
		}
	}
	if(df.Y < 0) {
		df.Y = -df.Y;
		for(int i=1; i<=N; i++) {
			if(S[i] == 'N') S[i] = 'S';
			else if(S[i] == 'S') S[i] = 'N';
		}
	}
}

void go(pii &now) {
	st.insert(now);
	for(int i=1; i<=N; i++) {
		mv(now, S[i]);
		st.insert(now);
	}
}

int cnt() {
	int ret = 0;
	for(auto& it: st) {
		int c = 0;
		if(st.find({it.X+1, it.Y}) != st.end()) ++c;
		if(st.find({it.X, it.Y+1}) != st.end()) ++c;
		if(st.find({it.X+1, it.Y+1}) != st.end()) ++c;
		if(c == 3) ++ret;
	}
	return ret;
}

pli geti(pii A) {
	if(dx == 0) return {A.X, A.Y % dy};
	if(dy == 0) return {A.Y, A.X % dx};
	return {1LL * A.X * dy - 1LL * A.Y * dx, A.Y % dy};
}

int day(pii A, pii B) {
	return (dx ? (A.X - B.X) / dx : (A.Y - B.Y) / dy) + 1;
}

vector<pii> A;

pii RC(pii U) {
	if(U.Y == 0) return A[U.X];
	if(U.Y == 1) return {A[U.X].X+1, A[U.X].Y};
	if(U.Y == 2) return {A[U.X].X, A[U.X].Y+1};
	if(U.Y == 3) return {A[U.X].X+1, A[U.X].Y+1};
}

vector<pii> T[1000009];

int main() {
	input(); tie(dx, dy) = df;
	pii now = {100000, 100000}; go(now);
	// printf("dx: %d, dy: %d\n", dx, dy);

	if(dx == 0 && dy == 0) return !printf("%d", cnt());
	
	map<pli, int> id; int M = 0;
	for(auto& it: st) {
		if(id[geti(it)] == 0) id[geti(it)] = ++M;
		if(id[geti({it.X+1, it.Y})] == 0) id[geti({it.X+1, it.Y})] = ++M;
		if(id[geti({it.X, it.Y+1})] == 0) id[geti({it.X, it.Y+1})] = ++M;
		if(id[geti({it.X+1, it.Y+1})] == 0) id[geti({it.X+1, it.Y+1})] = ++M;
	}
	for(auto& it: st) {
		T[id[geti(it)]].push_back({A.size(), 0});
		T[id[geti({it.X+1, it.Y})]].push_back({A.size(), 1});
		T[id[geti({it.X, it.Y+1})]].push_back({A.size(), 2});
		T[id[geti({it.X+1, it.Y+1})]].push_back({A.size(), 3});
		A.push_back(it);
	}
	int E = A.size();
	for(int i=1; i<=M; i++) {
		sort(T[i].begin(), T[i].end(), [&](pii PP, pii QQ) {
			if(RC(PP) == RC(QQ)) return PP.Y < QQ.Y;
			return RC(PP) < RC(QQ);
		});
		// for(auto& it: T[i]) printf("Ai: %d, (%d, %d), type: %d\n", it.X, RC(it).X - le9, RC(it).Y - le9, it.Y);
		// puts("------------------");
		// calculate x1
		pii prv = INF;
		for(auto& it: T[i]) {
			if(it.Y == 0) prv = RC(it);
			else {
				if(prv == INF) continue;
				x1[it.Y][it.X] = day(RC(it), prv);
			}
		}
		reverse(T[i].begin(), T[i].end());
		// calculate x2 and y
		prv = INF;
		for(auto& it: T[i]) {
			if(it.Y == 0) {
				if(prv != INF) y[it.X] = day(prv, RC(it));
				prv = RC(it);
			}
			else {
				if(prv == INF) continue;
				x2[it.Y][it.X] = day(prv, RC(it));
			}
		}
	}
	int inf = 1000000;
	for(int i=0; i<E; i++) {
		int X1 = inf, X2 = inf, Y = inf;
		if(x1[1][i] && x1[2][i] && x1[3][i]) X1 = max({x1[1][i], x1[2][i], x1[3][i]});
		if(x2[1][i] && x2[2][i] && x2[3][i]) X2 = max({x2[1][i], x2[2][i], x2[3][i]});
		if(y[i]) Y = y[i];

		int s1 = X1, e1 = X1 + Y - 2;
		int s2 = X2, e2 = Y - 1;
		e1 = min(e1, X1 + X2 - 2);
		s1 = min(s1, inf);
		e1 = min(e1, inf);
		s2 = min(s2, inf);
		e2 = min(e2, inf);
		if(s1 <= e1) ++P[s1], --P[e1+1];
		if(s2 <= e2) ++P[s2], --P[e2+1];
		// printf("i: %d, (%d, %d), x1: %d, x2: %d, y: %d, [%d, %d], [%d, %d]\n", i, A[i].X-le9, A[i].Y-le9, X1, X2, Y, s1, e1, s2, e2);
	}
	long long ds = 0, sum = 0;
	for(int i=1; i<inf; i++) {
		ds += P[i];
		sum += ds;
		if(i == K) return !printf("%lld", sum);
	}
	printf("%lld", sum + ds*(K-inf+1));
	return 0;
}

Compilation message

2016_ho_t4.cpp: In function 'void input()':
2016_ho_t4.cpp:26:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&N,&K);
  ~~~~~^~~~~~~~~~~~~~
2016_ho_t4.cpp:28:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %c", &S[i]);
   ~~~~~^~~~~~~~~~~~~~
2016_ho_t4.cpp: In function 'pii RC(pii)':
2016_ho_t4.cpp:84:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	23928 KB	Output is correct
2	Correct	23 ms	23800 KB	Output is correct
3	Correct	23 ms	23928 KB	Output is correct
4	Correct	23 ms	23928 KB	Output is correct
5	Correct	23 ms	23928 KB	Output is correct
6	Correct	24 ms	23928 KB	Output is correct
7	Correct	24 ms	23928 KB	Output is correct
8	Correct	23 ms	23928 KB	Output is correct
9	Correct	24 ms	23928 KB	Output is correct
10	Correct	24 ms	23932 KB	Output is correct
11	Correct	23 ms	23928 KB	Output is correct
12	Correct	23 ms	23800 KB	Output is correct
13	Correct	23 ms	23800 KB	Output is correct
14	Correct	23 ms	23928 KB	Output is correct
15	Correct	23 ms	23800 KB	Output is correct
16	Correct	23 ms	23928 KB	Output is correct
17	Correct	24 ms	23800 KB	Output is correct
18	Correct	23 ms	23928 KB	Output is correct
19	Correct	23 ms	23800 KB	Output is correct
20	Correct	24 ms	23800 KB	Output is correct
21	Correct	24 ms	23928 KB	Output is correct
22	Correct	23 ms	23928 KB	Output is correct
23	Correct	28 ms	23928 KB	Output is correct
24	Correct	24 ms	23800 KB	Output is correct
25	Correct	24 ms	23928 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	23928 KB	Output is correct
2	Correct	23 ms	23800 KB	Output is correct
3	Correct	23 ms	23928 KB	Output is correct
4	Correct	23 ms	23928 KB	Output is correct
5	Correct	23 ms	23928 KB	Output is correct
6	Correct	24 ms	23928 KB	Output is correct
7	Correct	24 ms	23928 KB	Output is correct
8	Correct	23 ms	23928 KB	Output is correct
9	Correct	24 ms	23928 KB	Output is correct
10	Correct	24 ms	23932 KB	Output is correct
11	Correct	23 ms	23928 KB	Output is correct
12	Correct	23 ms	23800 KB	Output is correct
13	Correct	23 ms	23800 KB	Output is correct
14	Correct	23 ms	23928 KB	Output is correct
15	Correct	23 ms	23800 KB	Output is correct
16	Correct	23 ms	23928 KB	Output is correct
17	Correct	24 ms	23800 KB	Output is correct
18	Correct	23 ms	23928 KB	Output is correct
19	Correct	23 ms	23800 KB	Output is correct
20	Correct	24 ms	23800 KB	Output is correct
21	Correct	24 ms	23928 KB	Output is correct
22	Correct	23 ms	23928 KB	Output is correct
23	Correct	28 ms	23928 KB	Output is correct
24	Correct	24 ms	23800 KB	Output is correct
25	Correct	24 ms	23928 KB	Output is correct
26	Correct	24 ms	23928 KB	Output is correct
27	Correct	27 ms	24312 KB	Output is correct
28	Correct	27 ms	24184 KB	Output is correct
29	Correct	57 ms	26744 KB	Output is correct
30	Correct	62 ms	26744 KB	Output is correct
31	Correct	266 ms	44880 KB	Output is correct
32	Correct	53 ms	24824 KB	Output is correct
33	Correct	92 ms	28916 KB	Output is correct
34	Correct	97 ms	29592 KB	Output is correct
35	Correct	93 ms	28788 KB	Output is correct
36	Correct	78 ms	27764 KB	Output is correct
37	Correct	49 ms	24952 KB	Output is correct
38	Correct	95 ms	28428 KB	Output is correct
39	Correct	79 ms	28788 KB	Output is correct
40	Correct	47 ms	25084 KB	Output is correct
41	Correct	72 ms	26872 KB	Output is correct
42	Correct	68 ms	26872 KB	Output is correct
43	Correct	90 ms	28936 KB	Output is correct
44	Correct	87 ms	28564 KB	Output is correct
45	Correct	74 ms	27636 KB	Output is correct
46	Correct	130 ms	31300 KB	Output is correct
47	Correct	147 ms	32752 KB	Output is correct
48	Correct	181 ms	35816 KB	Output is correct
49	Correct	355 ms	48584 KB	Output is correct
50	Correct	356 ms	48620 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	23928 KB	Output is correct
2	Correct	23 ms	23800 KB	Output is correct
3	Correct	23 ms	23928 KB	Output is correct
4	Correct	23 ms	23928 KB	Output is correct
5	Correct	23 ms	23928 KB	Output is correct
6	Correct	24 ms	23928 KB	Output is correct
7	Correct	24 ms	23928 KB	Output is correct
8	Correct	23 ms	23928 KB	Output is correct
9	Correct	24 ms	23928 KB	Output is correct
10	Correct	24 ms	23932 KB	Output is correct
11	Correct	23 ms	23928 KB	Output is correct
12	Correct	23 ms	23800 KB	Output is correct
13	Correct	23 ms	23800 KB	Output is correct
14	Correct	23 ms	23928 KB	Output is correct
15	Correct	23 ms	23800 KB	Output is correct
16	Correct	23 ms	23928 KB	Output is correct
17	Correct	24 ms	23800 KB	Output is correct
18	Correct	23 ms	23928 KB	Output is correct
19	Correct	23 ms	23800 KB	Output is correct
20	Correct	24 ms	23800 KB	Output is correct
21	Correct	24 ms	23928 KB	Output is correct
22	Correct	23 ms	23928 KB	Output is correct
23	Correct	28 ms	23928 KB	Output is correct
24	Correct	24 ms	23800 KB	Output is correct
25	Correct	24 ms	23928 KB	Output is correct
26	Correct	23 ms	23928 KB	Output is correct
27	Correct	23 ms	23800 KB	Output is correct
28	Correct	26 ms	23800 KB	Output is correct
29	Correct	24 ms	23800 KB	Output is correct
30	Correct	24 ms	23928 KB	Output is correct
31	Correct	26 ms	23932 KB	Output is correct
32	Correct	24 ms	23800 KB	Output is correct
33	Correct	25 ms	23928 KB	Output is correct
34	Correct	24 ms	23800 KB	Output is correct
35	Correct	26 ms	23928 KB	Output is correct
36	Correct	25 ms	23800 KB	Output is correct
37	Correct	26 ms	23800 KB	Output is correct
38	Correct	26 ms	23800 KB	Output is correct
39	Correct	26 ms	23800 KB	Output is correct
40	Correct	23 ms	23800 KB	Output is correct
41	Correct	25 ms	23824 KB	Output is correct
42	Correct	23 ms	23764 KB	Output is correct
43	Correct	26 ms	23928 KB	Output is correct
44	Correct	25 ms	23800 KB	Output is correct
45	Correct	25 ms	23928 KB	Output is correct
46	Correct	25 ms	23804 KB	Output is correct
47	Correct	25 ms	23928 KB	Output is correct
48	Correct	25 ms	23928 KB	Output is correct
49	Correct	25 ms	23928 KB	Output is correct
50	Correct	25 ms	23804 KB	Output is correct

Subtask #4
0 / 62.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	23928 KB	Output is correct
2	Correct	23 ms	23800 KB	Output is correct
3	Correct	23 ms	23928 KB	Output is correct
4	Correct	23 ms	23928 KB	Output is correct
5	Correct	23 ms	23928 KB	Output is correct
6	Correct	24 ms	23928 KB	Output is correct
7	Correct	24 ms	23928 KB	Output is correct
8	Correct	23 ms	23928 KB	Output is correct
9	Correct	24 ms	23928 KB	Output is correct
10	Correct	24 ms	23932 KB	Output is correct
11	Correct	23 ms	23928 KB	Output is correct
12	Correct	23 ms	23800 KB	Output is correct
13	Correct	23 ms	23800 KB	Output is correct
14	Correct	23 ms	23928 KB	Output is correct
15	Correct	23 ms	23800 KB	Output is correct
16	Correct	23 ms	23928 KB	Output is correct
17	Correct	24 ms	23800 KB	Output is correct
18	Correct	23 ms	23928 KB	Output is correct
19	Correct	23 ms	23800 KB	Output is correct
20	Correct	24 ms	23800 KB	Output is correct
21	Correct	24 ms	23928 KB	Output is correct
22	Correct	23 ms	23928 KB	Output is correct
23	Correct	28 ms	23928 KB	Output is correct
24	Correct	24 ms	23800 KB	Output is correct
25	Correct	24 ms	23928 KB	Output is correct
26	Correct	24 ms	23928 KB	Output is correct
27	Correct	27 ms	24312 KB	Output is correct
28	Correct	27 ms	24184 KB	Output is correct
29	Correct	57 ms	26744 KB	Output is correct
30	Correct	62 ms	26744 KB	Output is correct
31	Correct	266 ms	44880 KB	Output is correct
32	Correct	53 ms	24824 KB	Output is correct
33	Correct	92 ms	28916 KB	Output is correct
34	Correct	97 ms	29592 KB	Output is correct
35	Correct	93 ms	28788 KB	Output is correct
36	Correct	78 ms	27764 KB	Output is correct
37	Correct	49 ms	24952 KB	Output is correct
38	Correct	95 ms	28428 KB	Output is correct
39	Correct	79 ms	28788 KB	Output is correct
40	Correct	47 ms	25084 KB	Output is correct
41	Correct	72 ms	26872 KB	Output is correct
42	Correct	68 ms	26872 KB	Output is correct
43	Correct	90 ms	28936 KB	Output is correct
44	Correct	87 ms	28564 KB	Output is correct
45	Correct	74 ms	27636 KB	Output is correct
46	Correct	130 ms	31300 KB	Output is correct
47	Correct	147 ms	32752 KB	Output is correct
48	Correct	181 ms	35816 KB	Output is correct
49	Correct	355 ms	48584 KB	Output is correct
50	Correct	356 ms	48620 KB	Output is correct
51	Correct	23 ms	23928 KB	Output is correct
52	Correct	23 ms	23800 KB	Output is correct
53	Correct	26 ms	23800 KB	Output is correct
54	Correct	24 ms	23800 KB	Output is correct
55	Correct	24 ms	23928 KB	Output is correct
56	Correct	26 ms	23932 KB	Output is correct
57	Correct	24 ms	23800 KB	Output is correct
58	Correct	25 ms	23928 KB	Output is correct
59	Correct	24 ms	23800 KB	Output is correct
60	Correct	26 ms	23928 KB	Output is correct
61	Correct	25 ms	23800 KB	Output is correct
62	Correct	26 ms	23800 KB	Output is correct
63	Correct	26 ms	23800 KB	Output is correct
64	Correct	26 ms	23800 KB	Output is correct
65	Correct	23 ms	23800 KB	Output is correct
66	Correct	25 ms	23824 KB	Output is correct
67	Correct	23 ms	23764 KB	Output is correct
68	Correct	26 ms	23928 KB	Output is correct
69	Correct	25 ms	23800 KB	Output is correct
70	Correct	25 ms	23928 KB	Output is correct
71	Correct	25 ms	23804 KB	Output is correct
72	Correct	25 ms	23928 KB	Output is correct
73	Correct	25 ms	23928 KB	Output is correct
74	Correct	25 ms	23928 KB	Output is correct
75	Correct	25 ms	23804 KB	Output is correct
76	Incorrect	28 ms	24184 KB	Output isn't correct
77	Halted	0 ms	0 KB	-

답안 #128799

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 23.0 / 23.0

Subtask #4 0 / 62.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
23.0 / 23.0

Subtask #4
0 / 62.0