답안 #128583

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
128583	2019-07-11T07:09:19 Z	김세빈(#3158)	영역 (JOI16_ho_t4)	C++14	15 / 100	117 ms	20196 KB

2016_ho_t4

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair <ll, ll> pll;

vector <pll> V[101010], X;
set <pll> S[101010], T;
pll P[101010];
char C[101010];
ll dx[3] = {1, 0, 1}, dy[3] = {0, 1, 1};
ll n, k, a, b, z, ans;

ll gcd(ll p, ll q) { for(; p; swap(p, q)) q %= p; return q; }

pll getcoor(pll p) {
	return pll(b * p.first - a * p.second, a * p.first + b * p.second); }

void insert(set <pll> &S, ll l, ll r)
{
	auto it = S.lower_bound(pll(l, -1e18));
	if(it != S.begin() && prev(it) -> second >= l){
		l = prev(it) -> first; r = max(r, prev(it) -> second);
		S.erase(prev(it));
	}
	
	for(; ; ){
		it = S.lower_bound(pll(l, -1e18));
		if(it == S.end() || r < it -> first) break;
		r = max(r, it -> second); S.erase(it);
	}
	
	S.insert(pll(l, r));
}

void findintv(ll x, ll y, ll l, ll r, ll d, set <pll> &T)
{
	if(l >= r) return;
	else if(d == 3) insert(T, l, r);
	else{
		pll p = getcoor(pll(x + dx[d], y + dy[d])), _p = p; _p.second %= z;
		ll t = lower_bound(X.begin(), X.end(), _p) - X.begin();
		if(t == X.size() || X[t] != _p) return;
		
		ll f = getcoor(pll(x, y)).second / z - p.second / z;
		
		auto it = S[t].lower_bound(pll(l - f, -1e18));
		if(it != S[t].begin() && prev(it) -> second + f >= l){
			if(prev(it) -> second + f >= r) findintv(x, y, l, r, d + 1, T);
			else findintv(x, y, l, prev(it) -> second + f, d + 1, T);
		}
		if(it != S[t].end() && it -> first + f <= r){
			findintv(x, y, it -> first + f, r, d + 1, T);
		}
	}
}

int main()
{
	ll i, j, x, y, g, l, r, t;
	
	scanf("%lld%lld%s", &n, &k, C);
	
	for(i=0, x=0, y=0; i<n; i++){
		P[i] = pll(x, y);
		if(C[i] == 'N') y ++;
		else if(C[i] == 'S') y --;
		else if(C[i] == 'E') x ++;
		else x --;
	}
	
	P[i] = pll(x, y);
	
	if(x < 0){
		for(i=0; i<=n; i++){
			P[i].first = -P[i].first;
		}
		
		x = -x;
	}
	if(y < 0){
		for(i=0; i<=n; i++){
			P[i].second = -P[i].second;
		}
		
		y = -y;
	}
	
	if(x == 0 && y == 0){
		x = 1; k = 1;
	}
	
	g = gcd(x, y);
	a = x / g; b = y / g;
	z = g * (a * a + b * b);
	
	for(i=0; i<=n; i++){
		tie(x, y) = getcoor(P[i]);
		X.emplace_back(x, y % z);
	}
	
	sort(X.begin(), X.end());
	X.erase(unique(X.begin(), X.end()), X.end());
	
	for(i=0; i<=n; i++){
		tie(x, y) = getcoor(P[i]); y %= z;
		t = lower_bound(X.begin(), X.end(), pll(x, y)) - X.begin();
		V[t].push_back(P[i]);
	}
	
	for(i=0; i<X.size(); i++){
		for(pll &p: V[i]){
			l = getcoor(p).second / z;
			r = l + k;
			insert(S[i], l, r);
		}
	}
	
	for(i=0; i<X.size(); i++){
		T.clear();
		
		for(pll &p: V[i]){
			l = getcoor(p).second / z;
			r = l + k;
			findintv(p.first, p.second, l, r, 0, T);
		}
		
		for(pll p: T){
			ans += p.second - p.first;
		}
	}
	
	printf("%lld\n", ans);
	
	return 0;
}

Compilation message

2016_ho_t4.cpp: In function 'void findintv(ll, ll, ll, ll, ll, std::set<std::pair<long long int, long long int> >&)':
2016_ho_t4.cpp:44:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(t == X.size() || X[t] != _p) return;
      ~~^~~~~~~~~~~
2016_ho_t4.cpp: In function 'int main()':
2016_ho_t4.cpp:112:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0; i<X.size(); i++){
           ~^~~~~~~~~
2016_ho_t4.cpp:120:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0; i<X.size(); i++){
           ~^~~~~~~~~
2016_ho_t4.cpp:61:8: warning: unused variable 'j' [-Wunused-variable]
  ll i, j, x, y, g, l, r, t;
        ^
2016_ho_t4.cpp:63:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld%s", &n, &k, C);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	7416 KB	Output is correct
2	Correct	9 ms	7420 KB	Output is correct
3	Correct	8 ms	7416 KB	Output is correct
4	Correct	8 ms	7416 KB	Output is correct
5	Correct	8 ms	7416 KB	Output is correct
6	Correct	8 ms	7420 KB	Output is correct
7	Correct	10 ms	7416 KB	Output is correct
8	Correct	10 ms	7416 KB	Output is correct
9	Correct	8 ms	7416 KB	Output is correct
10	Correct	9 ms	7416 KB	Output is correct
11	Correct	8 ms	7420 KB	Output is correct
12	Correct	8 ms	7416 KB	Output is correct
13	Correct	11 ms	7416 KB	Output is correct
14	Correct	9 ms	7416 KB	Output is correct
15	Correct	9 ms	7432 KB	Output is correct
16	Correct	10 ms	7416 KB	Output is correct
17	Correct	9 ms	7416 KB	Output is correct
18	Correct	10 ms	7416 KB	Output is correct
19	Correct	8 ms	7416 KB	Output is correct
20	Correct	8 ms	7416 KB	Output is correct
21	Correct	8 ms	7416 KB	Output is correct
22	Correct	10 ms	7416 KB	Output is correct
23	Correct	8 ms	7416 KB	Output is correct
24	Correct	8 ms	7416 KB	Output is correct
25	Correct	8 ms	7388 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	7416 KB	Output is correct
2	Correct	9 ms	7420 KB	Output is correct
3	Correct	8 ms	7416 KB	Output is correct
4	Correct	8 ms	7416 KB	Output is correct
5	Correct	8 ms	7416 KB	Output is correct
6	Correct	8 ms	7420 KB	Output is correct
7	Correct	10 ms	7416 KB	Output is correct
8	Correct	10 ms	7416 KB	Output is correct
9	Correct	8 ms	7416 KB	Output is correct
10	Correct	9 ms	7416 KB	Output is correct
11	Correct	8 ms	7420 KB	Output is correct
12	Correct	8 ms	7416 KB	Output is correct
13	Correct	11 ms	7416 KB	Output is correct
14	Correct	9 ms	7416 KB	Output is correct
15	Correct	9 ms	7432 KB	Output is correct
16	Correct	10 ms	7416 KB	Output is correct
17	Correct	9 ms	7416 KB	Output is correct
18	Correct	10 ms	7416 KB	Output is correct
19	Correct	8 ms	7416 KB	Output is correct
20	Correct	8 ms	7416 KB	Output is correct
21	Correct	8 ms	7416 KB	Output is correct
22	Correct	10 ms	7416 KB	Output is correct
23	Correct	8 ms	7416 KB	Output is correct
24	Correct	8 ms	7416 KB	Output is correct
25	Correct	8 ms	7388 KB	Output is correct
26	Correct	11 ms	7544 KB	Output is correct
27	Correct	31 ms	7800 KB	Output is correct
28	Correct	17 ms	8436 KB	Output is correct
29	Correct	44 ms	11244 KB	Output is correct
30	Correct	61 ms	12388 KB	Output is correct
31	Correct	67 ms	18916 KB	Output is correct
32	Correct	69 ms	13028 KB	Output is correct
33	Correct	86 ms	14564 KB	Output is correct
34	Correct	85 ms	14692 KB	Output is correct
35	Correct	85 ms	14564 KB	Output is correct
36	Correct	83 ms	13924 KB	Output is correct
37	Correct	68 ms	13080 KB	Output is correct
38	Correct	86 ms	14536 KB	Output is correct
39	Correct	83 ms	14644 KB	Output is correct
40	Correct	117 ms	13156 KB	Output is correct
41	Correct	77 ms	13668 KB	Output is correct
42	Correct	81 ms	13924 KB	Output is correct
43	Correct	85 ms	14692 KB	Output is correct
44	Correct	84 ms	14436 KB	Output is correct
45	Correct	80 ms	14180 KB	Output is correct
46	Correct	63 ms	15844 KB	Output is correct
47	Correct	75 ms	16228 KB	Output is correct
48	Correct	39 ms	13028 KB	Output is correct
49	Correct	49 ms	20196 KB	Output is correct
50	Correct	62 ms	20196 KB	Output is correct

Subtask #3
0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	7416 KB	Output is correct
2	Correct	9 ms	7420 KB	Output is correct
3	Correct	8 ms	7416 KB	Output is correct
4	Correct	8 ms	7416 KB	Output is correct
5	Correct	8 ms	7416 KB	Output is correct
6	Correct	8 ms	7420 KB	Output is correct
7	Correct	10 ms	7416 KB	Output is correct
8	Correct	10 ms	7416 KB	Output is correct
9	Correct	8 ms	7416 KB	Output is correct
10	Correct	9 ms	7416 KB	Output is correct
11	Correct	8 ms	7420 KB	Output is correct
12	Correct	8 ms	7416 KB	Output is correct
13	Correct	11 ms	7416 KB	Output is correct
14	Correct	9 ms	7416 KB	Output is correct
15	Correct	9 ms	7432 KB	Output is correct
16	Correct	10 ms	7416 KB	Output is correct
17	Correct	9 ms	7416 KB	Output is correct
18	Correct	10 ms	7416 KB	Output is correct
19	Correct	8 ms	7416 KB	Output is correct
20	Correct	8 ms	7416 KB	Output is correct
21	Correct	8 ms	7416 KB	Output is correct
22	Correct	10 ms	7416 KB	Output is correct
23	Correct	8 ms	7416 KB	Output is correct
24	Correct	8 ms	7416 KB	Output is correct
25	Correct	8 ms	7388 KB	Output is correct
26	Incorrect	8 ms	7416 KB	Output isn't correct
27	Halted	0 ms	0 KB	-

Subtask #4
0 / 62.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	7416 KB	Output is correct
2	Correct	9 ms	7420 KB	Output is correct
3	Correct	8 ms	7416 KB	Output is correct
4	Correct	8 ms	7416 KB	Output is correct
5	Correct	8 ms	7416 KB	Output is correct
6	Correct	8 ms	7420 KB	Output is correct
7	Correct	10 ms	7416 KB	Output is correct
8	Correct	10 ms	7416 KB	Output is correct
9	Correct	8 ms	7416 KB	Output is correct
10	Correct	9 ms	7416 KB	Output is correct
11	Correct	8 ms	7420 KB	Output is correct
12	Correct	8 ms	7416 KB	Output is correct
13	Correct	11 ms	7416 KB	Output is correct
14	Correct	9 ms	7416 KB	Output is correct
15	Correct	9 ms	7432 KB	Output is correct
16	Correct	10 ms	7416 KB	Output is correct
17	Correct	9 ms	7416 KB	Output is correct
18	Correct	10 ms	7416 KB	Output is correct
19	Correct	8 ms	7416 KB	Output is correct
20	Correct	8 ms	7416 KB	Output is correct
21	Correct	8 ms	7416 KB	Output is correct
22	Correct	10 ms	7416 KB	Output is correct
23	Correct	8 ms	7416 KB	Output is correct
24	Correct	8 ms	7416 KB	Output is correct
25	Correct	8 ms	7388 KB	Output is correct
26	Correct	11 ms	7544 KB	Output is correct
27	Correct	31 ms	7800 KB	Output is correct
28	Correct	17 ms	8436 KB	Output is correct
29	Correct	44 ms	11244 KB	Output is correct
30	Correct	61 ms	12388 KB	Output is correct
31	Correct	67 ms	18916 KB	Output is correct
32	Correct	69 ms	13028 KB	Output is correct
33	Correct	86 ms	14564 KB	Output is correct
34	Correct	85 ms	14692 KB	Output is correct
35	Correct	85 ms	14564 KB	Output is correct
36	Correct	83 ms	13924 KB	Output is correct
37	Correct	68 ms	13080 KB	Output is correct
38	Correct	86 ms	14536 KB	Output is correct
39	Correct	83 ms	14644 KB	Output is correct
40	Correct	117 ms	13156 KB	Output is correct
41	Correct	77 ms	13668 KB	Output is correct
42	Correct	81 ms	13924 KB	Output is correct
43	Correct	85 ms	14692 KB	Output is correct
44	Correct	84 ms	14436 KB	Output is correct
45	Correct	80 ms	14180 KB	Output is correct
46	Correct	63 ms	15844 KB	Output is correct
47	Correct	75 ms	16228 KB	Output is correct
48	Correct	39 ms	13028 KB	Output is correct
49	Correct	49 ms	20196 KB	Output is correct
50	Correct	62 ms	20196 KB	Output is correct
51	Incorrect	8 ms	7416 KB	Output isn't correct
52	Halted	0 ms	0 KB	-

답안 #128583

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 0 / 23.0

Subtask #4 0 / 62.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
0 / 23.0

Subtask #4
0 / 62.0