oj.uz

Submission #132993

# Submission time Handle Problem Language Result Execution time Memory
132993 2019-07-20T03:45:18 Z sebinkim New Home (APIO18_new_home) C++14
47 / 100
 5000 ms 996400 KB 
#include <bits/stdc++.h>

#define eb emplace_back

using namespace std;

const int sz = 1 << 22;

struct event{
	int t, x, k;
	event(int t, int x, int k) : t(t), x(x), k(k) {}
};

struct line{
	int t, k, x, f;
	line(int t, int k, int x, int f) : t(t), k(k), x(x), f(f) {}
};

struct seg{
	multiset <int> L[sz + 100];
	int T[sz + sz + 100];
	
	seg()
	{
		int i;
		
		for(i=0; i<sz; i++){
			L[i].insert(-1e9);
		}
		
		for(i=0; i<sz+sz; i++){
			T[i] = -1e9;
		}
	}
	
	void insert(int p, int v)
	{
		L[p].insert(v);
		p += sz;
		
		for(; p; p>>=1){
			if(p >= sz) T[p] = *prev(L[p - sz].end());
			else T[p] = max(T[p << 1], T[p << 1 | 1]);
		}
	}
	
	void erase(int p, int v)
	{
		L[p].erase(L[p].find(v));
		p += sz;
		
		for(; p; p>>=1){
			if(p >= sz) T[p] = *prev(L[p - sz].end());
			else T[p] = max(T[p << 1], T[p << 1 | 1]);
		}
	}
	
	int get_max(int l, int r)
	{
		int ret = -1e9;
		l += sz, r += sz;
		
		for(; l<r; ){
			if(l & 1) ret = max(ret, T[l]);
			if(~r & 1) ret = max(ret, T[r]);
			l = l + 1 >> 1;
			r = r - 1 >> 1;
		}
		if(l == r) ret = max(ret, T[l]);
		
		return ret;
	}
};

seg TX, TY;
vector <line> LX, LY;
vector <event> E, Q;
multiset <int> S[303030];
vector <int> X;
int A[303030];
int n, g, q;

void update_line(int t, int k, int x, int f)
{
	if(S[k].empty()){
		LX.eb(t, 0, 1e9, !f);
		LY.eb(t, 2e8, 1e9, !f);
		LX.eb(t, 0, x, f);
		LY.eb(t, 2e8, -x, f);
	}
	else{
		auto it = S[k].lower_bound(x);
		
		if(it == S[k].begin()){
			LX.eb(t, 0, *it, !f);
			LX.eb(t, 0, x, f);
			LX.eb(t, (x + *it) >> 1, *it, f);
			LY.eb(t, (x + *it) >> 1, -x, f);
		}
		else if(it == S[k].end()){
			LY.eb(t, 2e8, -(*prev(it)), !f);
			LY.eb(t, 2e8, -x, f);
			LY.eb(t, (x + *prev(it)) >> 1, -(*prev(it)), f);
			LX.eb(t, (x + *prev(it)) >> 1, x, f);
		}
		else{
			LX.eb(t, (*it + *prev(it)) >> 1, *it, !f);
			LY.eb(t, (*it + *prev(it)) >> 1, -(*prev(it)), !f);
			LX.eb(t, (x + *it) >> 1, *it, f);
			LY.eb(t, (x + *it) >> 1, -x, f);
			LY.eb(t, (x + *prev(it)) >> 1, -(*prev(it)), f);
			LX.eb(t, (x + *prev(it)) >> 1, x, f);
		}
	}
}

int main()
{
	int x, t, a, b, i, j, k, i_, j_, k_;
	
	scanf("%d%d%d", &n, &g, &q);
	
	for(i=1; i<=n; i++){
		scanf("%d%d%d%d", &x, &t, &a, &b);
		E.eb(a, x << 1, t);
		E.eb(b + 1, x << 1, -t);
	}
	
	sort(E.begin(), E.end(), [&](event &ea, event &eb){
		return ea.t < eb.t;
	});
	
	for(i=1; i<=g; i++){
		LX.eb(0, 0, 1e9, 0);
		LY.eb(0, 2e8, 1e9, 0);
	}
	
	for(i=0; i<E.size(); i=i_){
		t = E[i].t;
		for(i_=i; i_<E.size() && E[i_].t == t; i_++){
			k = E[i_].k; x = E[i_].x;
			if(k > 0){
				update_line(t, k, x, 0);
				S[k].insert(x);
			}
			else{
				S[-k].erase(S[-k].find(x));
				update_line(t, -k, x, 1);
			}
		}
	}
	
	for(i=1; i<=q; i++){
		scanf("%d%d", &x, &t);
		x <<= 1; Q.eb(t, x, i);
		X.push_back(x);
	}
	
	sort(Q.begin(), Q.end(), [&](event &ea, event &eb){
		return ea.t < eb.t;
	});
		
	for(line &l: LX) X.push_back(l.k);
	for(line &l: LY) X.push_back(l.k);
	
	sort(X.begin(), X.end());
	X.erase(unique(X.begin(), X.end()), X.end());
	
	for(line &l: LX) l.k = lower_bound(X.begin(), X.end(), l.k) - X.begin();
	for(line &l: LY) l.k = lower_bound(X.begin(), X.end(), l.k) - X.begin();
	
	for(i=0, j=0, k=0; i<LX.size() || j<LY.size(); i=i_, j=j_, k=k_){
		if(i == LX.size()) t = LY[j].t;
		else if(j == LY.size()) t = LX[i].t;
		else t = min(LX[i].t, LY[j].t);
		
		for(k_=k; k_<Q.size() && Q[k_].t < t; k_++){
			x = lower_bound(X.begin(), X.end(), Q[k_].x) - X.begin();
		 	A[Q[k_].k] = max(TX.get_max(0, x) - Q[k_].x, Q[k_].x + TY.get_max(x, sz - 1));
		}
		
		for(i_=i; i_<LX.size() && LX[i_].t == t; i_++){
			if(!LX[i_].f) TX.insert(LX[i_].k, LX[i_].x);
			else TX.erase(LX[i_].k, LX[i_].x);
		}
		
		for(j_=j; j_<LY.size() && LY[j_].t == t; j_++){
			if(!LY[j_].f) TY.insert(LY[j_].k, LY[j_].x);
			else TY.erase(LY[j_].k, LY[j_].x);
		}
	}
	
	for(; k<Q.size(); k++){
		x = lower_bound(X.begin(), X.end(), Q[k].x) - X.begin();
	 	A[Q[k].k] = max(TX.get_max(0, x) - Q[k].x, Q[k].x + TY.get_max(x, sz - 1));
	}
	
	for(i=1; i<=q; i++){
		if(A[i] >= 2e8) printf("-1\n");
		else printf("%d\n", A[i] >> 1);
	}
	
	return 0;
}

Compilation message

new_home.cpp: In member function 'int seg::get_max(int, int)':
new_home.cpp:66:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    l = l + 1 >> 1;
        ~~^~~
new_home.cpp:67:10: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
    r = r - 1 >> 1;
        ~~^~~
new_home.cpp: In function 'int main()':
new_home.cpp:138:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0; i<E.size(); i=i_){
           ~^~~~~~~~~
new_home.cpp:140:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(i_=i; i_<E.size() && E[i_].t == t; i_++){
             ~~^~~~~~~~~
new_home.cpp:172:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0, j=0, k=0; i<LX.size() || j<LY.size(); i=i_, j=j_, k=k_){
                     ~^~~~~~~~~~
new_home.cpp:172:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0, j=0, k=0; i<LX.size() || j<LY.size(); i=i_, j=j_, k=k_){
                                    ~^~~~~~~~~~
new_home.cpp:173:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(i == LX.size()) t = LY[j].t;
      ~~^~~~~~~~~~~~
new_home.cpp:174:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   else if(j == LY.size()) t = LX[i].t;
           ~~^~~~~~~~~~~~
new_home.cpp:177:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(k_=k; k_<Q.size() && Q[k_].t < t; k_++){
             ~~^~~~~~~~~
new_home.cpp:182:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(i_=i; i_<LX.size() && LX[i_].t == t; i_++){
             ~~^~~~~~~~~~
new_home.cpp:187:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(j_=j; j_<LY.size() && LY[j_].t == t; j_++){
             ~~^~~~~~~~~~
new_home.cpp:193:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(; k<Q.size(); k++){
        ~^~~~~~~~~
new_home.cpp:121:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d", &n, &g, &q);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:124:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d", &x, &t, &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:154:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &x, &t);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1118 ms 868340 KB Output is correct
2 Correct 1091 ms 868344 KB Output is correct
3 Correct 1103 ms 868236 KB Output is correct
4 Correct 1103 ms 868232 KB Output is correct
5 Correct 1108 ms 868544 KB Output is correct
6 Correct 1092 ms 868552 KB Output is correct
7 Correct 1097 ms 868472 KB Output is correct
8 Correct 1099 ms 868600 KB Output is correct
9 Correct 1090 ms 868420 KB Output is correct
10 Correct 1091 ms 868516 KB Output is correct
11 Correct 1151 ms 868472 KB Output is correct
12 Correct 1097 ms 868536 KB Output is correct
13 Correct 1090 ms 868472 KB Output is correct
14 Correct 1092 ms 868472 KB Output is correct
15 Correct 1092 ms 868492 KB Output is correct
16 Correct 1108 ms 868560 KB Output is correct
17 Correct 1096 ms 868600 KB Output is correct
18 Correct 1122 ms 868600 KB Output is correct
19 Correct 1094 ms 868472 KB Output is correct
20 Correct 1097 ms 868344 KB Output is correct
21 Correct 1101 ms 868468 KB Output is correct
22 Correct 1114 ms 868600 KB Output is correct
23 Correct 1097 ms 868472 KB Output is correct
24 Correct 1090 ms 868352 KB Output is correct
25 Correct 1099 ms 868400 KB Output is correct
26 Correct 1094 ms 868520 KB Output is correct
27 Correct 1100 ms 868348 KB Output is correct
28 Correct 1101 ms 868600 KB Output is correct
29 Correct 1103 ms 868472 KB Output is correct
30 Correct 1096 ms 868452 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1118 ms 868340 KB Output is correct
2 Correct 1091 ms 868344 KB Output is correct
3 Correct 1103 ms 868236 KB Output is correct
4 Correct 1103 ms 868232 KB Output is correct
5 Correct 1108 ms 868544 KB Output is correct
6 Correct 1092 ms 868552 KB Output is correct
7 Correct 1097 ms 868472 KB Output is correct
8 Correct 1099 ms 868600 KB Output is correct
9 Correct 1090 ms 868420 KB Output is correct
10 Correct 1091 ms 868516 KB Output is correct
11 Correct 1151 ms 868472 KB Output is correct
12 Correct 1097 ms 868536 KB Output is correct
13 Correct 1090 ms 868472 KB Output is correct
14 Correct 1092 ms 868472 KB Output is correct
15 Correct 1092 ms 868492 KB Output is correct
16 Correct 1108 ms 868560 KB Output is correct
17 Correct 1096 ms 868600 KB Output is correct
18 Correct 1122 ms 868600 KB Output is correct
19 Correct 1094 ms 868472 KB Output is correct
20 Correct 1097 ms 868344 KB Output is correct
21 Correct 1101 ms 868468 KB Output is correct
22 Correct 1114 ms 868600 KB Output is correct
23 Correct 1097 ms 868472 KB Output is correct
24 Correct 1090 ms 868352 KB Output is correct
25 Correct 1099 ms 868400 KB Output is correct
26 Correct 1094 ms 868520 KB Output is correct
27 Correct 1100 ms 868348 KB Output is correct
28 Correct 1101 ms 868600 KB Output is correct
29 Correct 1103 ms 868472 KB Output is correct
30 Correct 1096 ms 868452 KB Output is correct
31 Correct 1845 ms 894016 KB Output is correct
32 Correct 1392 ms 890056 KB Output is correct
33 Correct 1785 ms 892652 KB Output is correct
34 Correct 1778 ms 892468 KB Output is correct
35 Correct 1822 ms 893824 KB Output is correct
36 Correct 1800 ms 893928 KB Output is correct
37 Correct 1599 ms 892580 KB Output is correct
38 Correct 1587 ms 892412 KB Output is correct
39 Correct 1484 ms 892340 KB Output is correct
40 Correct 1525 ms 892604 KB Output is correct
41 Correct 1501 ms 888916 KB Output is correct
42 Correct 1509 ms 888844 KB Output is correct
43 Correct 1289 ms 888944 KB Output is correct
44 Correct 1481 ms 888952 KB Output is correct
45 Correct 1452 ms 889016 KB Output is correct
46 Correct 1443 ms 888816 KB Output is correct
47 Correct 1320 ms 887796 KB Output is correct
48 Correct 1315 ms 887684 KB Output is correct
49 Correct 1367 ms 888116 KB Output is correct
50 Correct 1388 ms 888424 KB Output is correct
51 Correct 1362 ms 888132 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4427 ms 983560 KB Output is correct
2 Execution timed out 5134 ms 996400 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5151 ms 992072 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1118 ms 868340 KB Output is correct
2 Correct 1091 ms 868344 KB Output is correct
3 Correct 1103 ms 868236 KB Output is correct
4 Correct 1103 ms 868232 KB Output is correct
5 Correct 1108 ms 868544 KB Output is correct
6 Correct 1092 ms 868552 KB Output is correct
7 Correct 1097 ms 868472 KB Output is correct
8 Correct 1099 ms 868600 KB Output is correct
9 Correct 1090 ms 868420 KB Output is correct
10 Correct 1091 ms 868516 KB Output is correct
11 Correct 1151 ms 868472 KB Output is correct
12 Correct 1097 ms 868536 KB Output is correct
13 Correct 1090 ms 868472 KB Output is correct
14 Correct 1092 ms 868472 KB Output is correct
15 Correct 1092 ms 868492 KB Output is correct
16 Correct 1108 ms 868560 KB Output is correct
17 Correct 1096 ms 868600 KB Output is correct
18 Correct 1122 ms 868600 KB Output is correct
19 Correct 1094 ms 868472 KB Output is correct
20 Correct 1097 ms 868344 KB Output is correct
21 Correct 1101 ms 868468 KB Output is correct
22 Correct 1114 ms 868600 KB Output is correct
23 Correct 1097 ms 868472 KB Output is correct
24 Correct 1090 ms 868352 KB Output is correct
25 Correct 1099 ms 868400 KB Output is correct
26 Correct 1094 ms 868520 KB Output is correct
27 Correct 1100 ms 868348 KB Output is correct
28 Correct 1101 ms 868600 KB Output is correct
29 Correct 1103 ms 868472 KB Output is correct
30 Correct 1096 ms 868452 KB Output is correct
31 Correct 1845 ms 894016 KB Output is correct
32 Correct 1392 ms 890056 KB Output is correct
33 Correct 1785 ms 892652 KB Output is correct
34 Correct 1778 ms 892468 KB Output is correct
35 Correct 1822 ms 893824 KB Output is correct
36 Correct 1800 ms 893928 KB Output is correct
37 Correct 1599 ms 892580 KB Output is correct
38 Correct 1587 ms 892412 KB Output is correct
39 Correct 1484 ms 892340 KB Output is correct
40 Correct 1525 ms 892604 KB Output is correct
41 Correct 1501 ms 888916 KB Output is correct
42 Correct 1509 ms 888844 KB Output is correct
43 Correct 1289 ms 888944 KB Output is correct
44 Correct 1481 ms 888952 KB Output is correct
45 Correct 1452 ms 889016 KB Output is correct
46 Correct 1443 ms 888816 KB Output is correct
47 Correct 1320 ms 887796 KB Output is correct
48 Correct 1315 ms 887684 KB Output is correct
49 Correct 1367 ms 888116 KB Output is correct
50 Correct 1388 ms 888424 KB Output is correct
51 Correct 1362 ms 888132 KB Output is correct
52 Correct 1560 ms 891492 KB Output is correct
53 Correct 1548 ms 891604 KB Output is correct
54 Correct 1678 ms 890772 KB Output is correct
55 Correct 1525 ms 889488 KB Output is correct
56 Correct 1506 ms 889692 KB Output is correct
57 Correct 1502 ms 888996 KB Output is correct
58 Correct 1519 ms 889372 KB Output is correct
59 Correct 1513 ms 889556 KB Output is correct
60 Correct 1523 ms 888908 KB Output is correct
61 Correct 1366 ms 891252 KB Output is correct
62 Correct 1583 ms 891728 KB Output is correct
63 Correct 1608 ms 889692 KB Output is correct
64 Correct 1563 ms 889120 KB Output is correct
65 Correct 1556 ms 888976 KB Output is correct
66 Correct 1503 ms 888888 KB Output is correct
67 Correct 1408 ms 887276 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1118 ms 868340 KB Output is correct
2 Correct 1091 ms 868344 KB Output is correct
3 Correct 1103 ms 868236 KB Output is correct
4 Correct 1103 ms 868232 KB Output is correct
5 Correct 1108 ms 868544 KB Output is correct
6 Correct 1092 ms 868552 KB Output is correct
7 Correct 1097 ms 868472 KB Output is correct
8 Correct 1099 ms 868600 KB Output is correct
9 Correct 1090 ms 868420 KB Output is correct
10 Correct 1091 ms 868516 KB Output is correct
11 Correct 1151 ms 868472 KB Output is correct
12 Correct 1097 ms 868536 KB Output is correct
13 Correct 1090 ms 868472 KB Output is correct
14 Correct 1092 ms 868472 KB Output is correct
15 Correct 1092 ms 868492 KB Output is correct
16 Correct 1108 ms 868560 KB Output is correct
17 Correct 1096 ms 868600 KB Output is correct
18 Correct 1122 ms 868600 KB Output is correct
19 Correct 1094 ms 868472 KB Output is correct
20 Correct 1097 ms 868344 KB Output is correct
21 Correct 1101 ms 868468 KB Output is correct
22 Correct 1114 ms 868600 KB Output is correct
23 Correct 1097 ms 868472 KB Output is correct
24 Correct 1090 ms 868352 KB Output is correct
25 Correct 1099 ms 868400 KB Output is correct
26 Correct 1094 ms 868520 KB Output is correct
27 Correct 1100 ms 868348 KB Output is correct
28 Correct 1101 ms 868600 KB Output is correct
29 Correct 1103 ms 868472 KB Output is correct
30 Correct 1096 ms 868452 KB Output is correct
31 Correct 1845 ms 894016 KB Output is correct
32 Correct 1392 ms 890056 KB Output is correct
33 Correct 1785 ms 892652 KB Output is correct
34 Correct 1778 ms 892468 KB Output is correct
35 Correct 1822 ms 893824 KB Output is correct
36 Correct 1800 ms 893928 KB Output is correct
37 Correct 1599 ms 892580 KB Output is correct
38 Correct 1587 ms 892412 KB Output is correct
39 Correct 1484 ms 892340 KB Output is correct
40 Correct 1525 ms 892604 KB Output is correct
41 Correct 1501 ms 888916 KB Output is correct
42 Correct 1509 ms 888844 KB Output is correct
43 Correct 1289 ms 888944 KB Output is correct
44 Correct 1481 ms 888952 KB Output is correct
45 Correct 1452 ms 889016 KB Output is correct
46 Correct 1443 ms 888816 KB Output is correct
47 Correct 1320 ms 887796 KB Output is correct
48 Correct 1315 ms 887684 KB Output is correct
49 Correct 1367 ms 888116 KB Output is correct
50 Correct 1388 ms 888424 KB Output is correct
51 Correct 1362 ms 888132 KB Output is correct
52 Correct 4427 ms 983560 KB Output is correct
53 Execution timed out 5134 ms 996400 KB Time limit exceeded
54 Halted 0 ms 0 KB -