oj.uz

Submission #441890

# Submission time Handle Problem Language Result Execution time Memory
441890 2021-07-06T13:46:46 Z kig9981 Event Hopping 2 (JOI21_event2) C++17
100 / 100
 418 ms 76192 KB 
#include <bits/stdc++.h>

#ifdef NON_SUBMIT
#define TEST(n) (n)
#define tout cerr
#else
#define TEST(n) ((void)0)
#define tout cin
#endif

using namespace std;

struct Seg
{
	int l, r, v;
	Seg() : l(0), r(0), v(0) {}
} tree[5555555];

const int SZ=1<<18;
vector<int> x(1);
vector<pair<int,int>> S;
int node_cnt, tor[2*SZ], lazy[2*SZ], L[2*SZ], R[2*SZ];

void set_tree(int b, int n, int p, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1;
	if(s==e) {
		tree[p].v=1;
		return;
	}
	if(n<=m) {
		if(tree[p].l==tree[b].l) tree[tree[p].l=node_cnt++]=tree[tree[b].l];
		set_tree(tree[b].l,n,tree[p].l,s,m);
	}
	else {
		if(tree[p].r==tree[b].r) tree[tree[p].r=node_cnt++]=tree[tree[b].r];
		set_tree(tree[b].r,n,tree[p].r,m+1,e);
	}
	tree[p].v=tree[tree[p].l].v+tree[tree[p].r].v;
}

int get_r(int p, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1;
	if(tree[p].v==0) return -1;
	if(s==e) return m;
	if(tree[tree[p].r].v) return get_r(tree[p].r,m+1,e);
	return get_r(tree[p].l,s,m);
}

int get_sum(int n1, int n2, int p, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1;
	if(n2<n1 || n2<s || e<n1 || p==0) return 0;
	if(n1<=s && e<=n2) return tree[p].v;
	return get_sum(n1,n2,tree[p].l,s,m)+get_sum(n1,n2,tree[p].r,m+1,e);
}

void lazy_propagation(int bit, int s, int e)
{
	if(lazy[bit]) {
		tor[bit]=1;
		if(s<e) lazy[2*bit]=lazy[2*bit+1]=1;
		lazy[bit]=0;
	}
}

void or_tree(int n1, int n2, int bit=1, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1;
	lazy_propagation(bit,s,e);
	if(n2<n1 || n2<s || e<n1) return;
	if(n1<=s && e<=n2) {
		lazy[bit]=1;
		lazy_propagation(bit,s,e);
		return;
	}
	or_tree(n1,n2,2*bit,s,m);
	or_tree(n1,n2,2*bit+1,m+1,e);
	tor[bit]=tor[2*bit]|tor[2*bit+1];
}

int get_or(int n1, int n2, int bit=1, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1;
	lazy_propagation(bit,s,e);
	if(n2<n1 || n2<s || e<n1) return 0;
	if(n1<=s && e<=n2) return tor[bit];
	return get_or(n1,n2,2*bit,s,m)|get_or(n1,n2,2*bit+1,m+1,e);
}

int get_lp(int n1, int n2, int bit=1, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1, t;
	lazy_propagation(bit,s,e);
	if(n2<n1 || n2<s || e<n1 || !tor[bit]) return SZ;
	if(s==e) return m;
	if((t=get_lp(n1,n2,2*bit,s,m))<SZ) return t;
	return get_lp(n1,n2,2*bit+1,m+1,e);
}

int get_rp(int n1, int n2, int bit=1, int s=0, int e=SZ-1)
{
	int m=(s+e)>>1, t;
	lazy_propagation(bit,s,e);
	if(n2<n1 || n2<s || e<n1 || !tor[bit]) return -1;
	if(s==e) return m;
	if((t=get_rp(n1,n2,2*bit+1,m+1,e))>-1) return t;
	return get_rp(n1,n2,2*bit,s,m);
}

int get_lv(int n)
{
	int ret=L[n+=SZ];
	while(n>>=1) ret+=L[n];
	return ret;
}

int get_rv(int n)
{
	int ret=R[n+=SZ];
	while(n>>=1) ret+=R[n];
	return ret;
}

void add_lv(int s, int e, int v)
{
	for(s+=SZ,e+=SZ;s<=e;s>>=1,e>>=1) {
		if(s&1) L[s++]+=v;
		if(~e&1) L[e--]+=v;
	}
}

void add_rv(int s, int e, int v)
{
	for(s+=SZ,e+=SZ;s<=e;s>>=1,e>>=1) {
		if(s&1) R[s++]+=v;
		if(~e&1) R[e--]+=v;
	}
}

void set_lv(int n, int v) {L[n+SZ]+=v-get_lv(n);}
void set_rv(int n, int v) {R[n+SZ]+=v-get_rv(n);}

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(NULL); cout.tie(NULL);
	TEST(freopen("input.txt","r",stdin));
	TEST(freopen("output.txt","w",stdout));
	TEST(freopen("debug.txt","w",stderr));
	int N, K, cnt=0;
	cin>>N>>K; S.resize(N);
	for(auto &[l,r]: S) {
		cin>>l>>r;
		x.push_back(l);
		x.push_back(r);
	}
	sort(x.begin(),x.end()); x.resize(node_cnt=unique(x.begin(),x.end())-x.begin());
	memset(R,-1,sizeof(R));
	for(int i=0;i<N;i++) {
		auto &[l,r]=S[i];
		l=lower_bound(x.begin(),x.end(),l)-x.begin();
		r=lower_bound(x.begin(),x.end(),r)-x.begin();
		R[r]=max(R[r],l);
	}
	for(int i=1;i<x.size();i++) {
		tree[i]=tree[i-1];
		if(R[i]>-1 && get_r(i-1)<R[i]) {
			tree[i]=tree[R[i]];
			set_tree(R[i],R[i],i);
		}
	}
	if(tree[x.size()-1].v<K) {
		cout<<"-1\n";
		return 0;
	}
	memset(R,0,sizeof(R));
	or_tree(0,0); or_tree(x.size()-1,x.size()-1);
	for(int i=0;i<N;i++) {
		auto[l,r]=S[i];
		if(get_or(l,r-1)) continue;
		int s=get_rp(0,l)+1, e=get_lp(r,SZ-1), sv=get_lv(s), ev=get_rv(e), lv=get_sum(s,l,l), rv=get_sum(r,e,e), tv=get_sum(s,e,e);
		if(sv+lv+1+rv+ev<K || ++cnt>K) continue;
		or_tree(l,r-1);
		add_rv(0,s,lv+rv+1-tv); set_rv(l,ev+rv+1);
		add_lv(e,SZ-1,lv+rv+1-tv); set_lv(r,sv+lv+1);
		cout<<i+1<<'\n';
	}
	return 0;
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:167:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  167 |  for(int i=1;i<x.size();i++) {
      |              ~^~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 67652 KB Output is correct
2 Correct 36 ms 67620 KB Output is correct
3 Correct 34 ms 67652 KB Output is correct
4 Correct 309 ms 73564 KB Output is correct
5 Correct 307 ms 73408 KB Output is correct
6 Correct 301 ms 73188 KB Output is correct
7 Correct 307 ms 72840 KB Output is correct
8 Correct 318 ms 73640 KB Output is correct
9 Correct 308 ms 73444 KB Output is correct
10 Correct 301 ms 73152 KB Output is correct
11 Correct 295 ms 72732 KB Output is correct
12 Correct 252 ms 73540 KB Output is correct
13 Correct 253 ms 73380 KB Output is correct
14 Correct 254 ms 73136 KB Output is correct
15 Correct 255 ms 72840 KB Output is correct
16 Correct 171 ms 73440 KB Output is correct
17 Correct 163 ms 75168 KB Output is correct
18 Correct 174 ms 74688 KB Output is correct
19 Correct 142 ms 75208 KB Output is correct
20 Correct 138 ms 75220 KB Output is correct
21 Correct 138 ms 75200 KB Output is correct
22 Correct 143 ms 75156 KB Output is correct
23 Correct 136 ms 75076 KB Output is correct
24 Correct 136 ms 75020 KB Output is correct
25 Correct 143 ms 74472 KB Output is correct
26 Correct 148 ms 74448 KB Output is correct
27 Correct 146 ms 74380 KB Output is correct
28 Correct 111 ms 71188 KB Output is correct
29 Correct 116 ms 71232 KB Output is correct
30 Correct 103 ms 71208 KB Output is correct
31 Correct 98 ms 71184 KB Output is correct
32 Correct 101 ms 71232 KB Output is correct
33 Correct 101 ms 71148 KB Output is correct
34 Correct 252 ms 73792 KB Output is correct
35 Correct 254 ms 73008 KB Output is correct
36 Correct 262 ms 72144 KB Output is correct
37 Correct 228 ms 75064 KB Output is correct
38 Correct 214 ms 74892 KB Output is correct
39 Correct 208 ms 74816 KB Output is correct
40 Correct 212 ms 74636 KB Output is correct
41 Correct 220 ms 74484 KB Output is correct
42 Correct 111 ms 71136 KB Output is correct
43 Correct 224 ms 75384 KB Output is correct
44 Correct 227 ms 75332 KB Output is correct
45 Correct 224 ms 75284 KB Output is correct
46 Correct 215 ms 75196 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 67576 KB Output is correct
2 Correct 37 ms 67512 KB Output is correct
3 Correct 36 ms 67596 KB Output is correct
4 Correct 36 ms 67680 KB Output is correct
5 Correct 36 ms 67652 KB Output is correct
6 Correct 35 ms 67652 KB Output is correct
7 Correct 36 ms 67608 KB Output is correct
8 Correct 35 ms 67600 KB Output is correct
9 Correct 36 ms 67580 KB Output is correct
10 Correct 36 ms 67652 KB Output is correct
11 Correct 35 ms 67492 KB Output is correct
12 Correct 35 ms 67656 KB Output is correct
13 Correct 37 ms 67624 KB Output is correct
14 Correct 35 ms 67652 KB Output is correct
15 Correct 36 ms 67572 KB Output is correct
16 Correct 35 ms 67660 KB Output is correct
17 Correct 36 ms 67556 KB Output is correct
18 Correct 35 ms 67604 KB Output is correct
19 Correct 36 ms 67532 KB Output is correct
20 Correct 35 ms 67532 KB Output is correct
21 Correct 36 ms 67624 KB Output is correct
22 Correct 35 ms 67572 KB Output is correct
23 Correct 36 ms 67660 KB Output is correct
24 Correct 36 ms 67524 KB Output is correct
25 Correct 37 ms 67524 KB Output is correct
26 Correct 36 ms 67568 KB Output is correct
27 Correct 36 ms 67720 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 67576 KB Output is correct
2 Correct 37 ms 67512 KB Output is correct
3 Correct 36 ms 67596 KB Output is correct
4 Correct 36 ms 67680 KB Output is correct
5 Correct 36 ms 67652 KB Output is correct
6 Correct 35 ms 67652 KB Output is correct
7 Correct 36 ms 67608 KB Output is correct
8 Correct 35 ms 67600 KB Output is correct
9 Correct 36 ms 67580 KB Output is correct
10 Correct 36 ms 67652 KB Output is correct
11 Correct 35 ms 67492 KB Output is correct
12 Correct 35 ms 67656 KB Output is correct
13 Correct 37 ms 67624 KB Output is correct
14 Correct 35 ms 67652 KB Output is correct
15 Correct 36 ms 67572 KB Output is correct
16 Correct 35 ms 67660 KB Output is correct
17 Correct 36 ms 67556 KB Output is correct
18 Correct 35 ms 67604 KB Output is correct
19 Correct 36 ms 67532 KB Output is correct
20 Correct 35 ms 67532 KB Output is correct
21 Correct 36 ms 67624 KB Output is correct
22 Correct 35 ms 67572 KB Output is correct
23 Correct 36 ms 67660 KB Output is correct
24 Correct 36 ms 67524 KB Output is correct
25 Correct 37 ms 67524 KB Output is correct
26 Correct 36 ms 67568 KB Output is correct
27 Correct 36 ms 67720 KB Output is correct
28 Correct 39 ms 67952 KB Output is correct
29 Correct 39 ms 67916 KB Output is correct
30 Correct 39 ms 67924 KB Output is correct
31 Correct 39 ms 67996 KB Output is correct
32 Correct 39 ms 67848 KB Output is correct
33 Correct 38 ms 67648 KB Output is correct
34 Correct 38 ms 67692 KB Output is correct
35 Correct 45 ms 67912 KB Output is correct
36 Correct 43 ms 67848 KB Output is correct
37 Correct 43 ms 67956 KB Output is correct
38 Correct 39 ms 67652 KB Output is correct
39 Correct 44 ms 67888 KB Output is correct
40 Correct 45 ms 67908 KB Output is correct
41 Correct 43 ms 67924 KB Output is correct
42 Correct 39 ms 67648 KB Output is correct
43 Correct 41 ms 67940 KB Output is correct
44 Correct 41 ms 67908 KB Output is correct
45 Correct 41 ms 67852 KB Output is correct
46 Correct 38 ms 67652 KB Output is correct
47 Correct 42 ms 67844 KB Output is correct
48 Correct 40 ms 67932 KB Output is correct
49 Correct 39 ms 67908 KB Output is correct
50 Correct 37 ms 67656 KB Output is correct
51 Correct 40 ms 67868 KB Output is correct
52 Correct 38 ms 67928 KB Output is correct
53 Correct 40 ms 67872 KB Output is correct
54 Correct 39 ms 67652 KB Output is correct
55 Correct 43 ms 67828 KB Output is correct
56 Correct 45 ms 67800 KB Output is correct
57 Correct 44 ms 67872 KB Output is correct
58 Correct 45 ms 67788 KB Output is correct
59 Correct 44 ms 67840 KB Output is correct
60 Correct 47 ms 67780 KB Output is correct
61 Correct 44 ms 67812 KB Output is correct
62 Correct 43 ms 67836 KB Output is correct
63 Correct 43 ms 67780 KB Output is correct
64 Correct 38 ms 67636 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 67652 KB Output is correct
2 Correct 36 ms 67620 KB Output is correct
3 Correct 34 ms 67652 KB Output is correct
4 Correct 309 ms 73564 KB Output is correct
5 Correct 307 ms 73408 KB Output is correct
6 Correct 301 ms 73188 KB Output is correct
7 Correct 307 ms 72840 KB Output is correct
8 Correct 318 ms 73640 KB Output is correct
9 Correct 308 ms 73444 KB Output is correct
10 Correct 301 ms 73152 KB Output is correct
11 Correct 295 ms 72732 KB Output is correct
12 Correct 252 ms 73540 KB Output is correct
13 Correct 253 ms 73380 KB Output is correct
14 Correct 254 ms 73136 KB Output is correct
15 Correct 255 ms 72840 KB Output is correct
16 Correct 171 ms 73440 KB Output is correct
17 Correct 163 ms 75168 KB Output is correct
18 Correct 174 ms 74688 KB Output is correct
19 Correct 142 ms 75208 KB Output is correct
20 Correct 138 ms 75220 KB Output is correct
21 Correct 138 ms 75200 KB Output is correct
22 Correct 143 ms 75156 KB Output is correct
23 Correct 136 ms 75076 KB Output is correct
24 Correct 136 ms 75020 KB Output is correct
25 Correct 143 ms 74472 KB Output is correct
26 Correct 148 ms 74448 KB Output is correct
27 Correct 146 ms 74380 KB Output is correct
28 Correct 111 ms 71188 KB Output is correct
29 Correct 116 ms 71232 KB Output is correct
30 Correct 103 ms 71208 KB Output is correct
31 Correct 98 ms 71184 KB Output is correct
32 Correct 101 ms 71232 KB Output is correct
33 Correct 101 ms 71148 KB Output is correct
34 Correct 252 ms 73792 KB Output is correct
35 Correct 254 ms 73008 KB Output is correct
36 Correct 262 ms 72144 KB Output is correct
37 Correct 228 ms 75064 KB Output is correct
38 Correct 214 ms 74892 KB Output is correct
39 Correct 208 ms 74816 KB Output is correct
40 Correct 212 ms 74636 KB Output is correct
41 Correct 220 ms 74484 KB Output is correct
42 Correct 111 ms 71136 KB Output is correct
43 Correct 224 ms 75384 KB Output is correct
44 Correct 227 ms 75332 KB Output is correct
45 Correct 224 ms 75284 KB Output is correct
46 Correct 215 ms 75196 KB Output is correct
47 Correct 35 ms 67576 KB Output is correct
48 Correct 37 ms 67512 KB Output is correct
49 Correct 36 ms 67596 KB Output is correct
50 Correct 36 ms 67680 KB Output is correct
51 Correct 36 ms 67652 KB Output is correct
52 Correct 35 ms 67652 KB Output is correct
53 Correct 36 ms 67608 KB Output is correct
54 Correct 35 ms 67600 KB Output is correct
55 Correct 36 ms 67580 KB Output is correct
56 Correct 36 ms 67652 KB Output is correct
57 Correct 35 ms 67492 KB Output is correct
58 Correct 35 ms 67656 KB Output is correct
59 Correct 37 ms 67624 KB Output is correct
60 Correct 35 ms 67652 KB Output is correct
61 Correct 36 ms 67572 KB Output is correct
62 Correct 35 ms 67660 KB Output is correct
63 Correct 36 ms 67556 KB Output is correct
64 Correct 35 ms 67604 KB Output is correct
65 Correct 36 ms 67532 KB Output is correct
66 Correct 35 ms 67532 KB Output is correct
67 Correct 36 ms 67624 KB Output is correct
68 Correct 35 ms 67572 KB Output is correct
69 Correct 36 ms 67660 KB Output is correct
70 Correct 36 ms 67524 KB Output is correct
71 Correct 37 ms 67524 KB Output is correct
72 Correct 36 ms 67568 KB Output is correct
73 Correct 36 ms 67720 KB Output is correct
74 Correct 39 ms 67952 KB Output is correct
75 Correct 39 ms 67916 KB Output is correct
76 Correct 39 ms 67924 KB Output is correct
77 Correct 39 ms 67996 KB Output is correct
78 Correct 39 ms 67848 KB Output is correct
79 Correct 38 ms 67648 KB Output is correct
80 Correct 38 ms 67692 KB Output is correct
81 Correct 45 ms 67912 KB Output is correct
82 Correct 43 ms 67848 KB Output is correct
83 Correct 43 ms 67956 KB Output is correct
84 Correct 39 ms 67652 KB Output is correct
85 Correct 44 ms 67888 KB Output is correct
86 Correct 45 ms 67908 KB Output is correct
87 Correct 43 ms 67924 KB Output is correct
88 Correct 39 ms 67648 KB Output is correct
89 Correct 41 ms 67940 KB Output is correct
90 Correct 41 ms 67908 KB Output is correct
91 Correct 41 ms 67852 KB Output is correct
92 Correct 38 ms 67652 KB Output is correct
93 Correct 42 ms 67844 KB Output is correct
94 Correct 40 ms 67932 KB Output is correct
95 Correct 39 ms 67908 KB Output is correct
96 Correct 37 ms 67656 KB Output is correct
97 Correct 40 ms 67868 KB Output is correct
98 Correct 38 ms 67928 KB Output is correct
99 Correct 40 ms 67872 KB Output is correct
100 Correct 39 ms 67652 KB Output is correct
101 Correct 43 ms 67828 KB Output is correct
102 Correct 45 ms 67800 KB Output is correct
103 Correct 44 ms 67872 KB Output is correct
104 Correct 45 ms 67788 KB Output is correct
105 Correct 44 ms 67840 KB Output is correct
106 Correct 47 ms 67780 KB Output is correct
107 Correct 44 ms 67812 KB Output is correct
108 Correct 43 ms 67836 KB Output is correct
109 Correct 43 ms 67780 KB Output is correct
110 Correct 38 ms 67636 KB Output is correct
111 Correct 177 ms 75828 KB Output is correct
112 Correct 175 ms 75712 KB Output is correct
113 Correct 177 ms 75536 KB Output is correct
114 Correct 174 ms 74992 KB Output is correct
115 Correct 175 ms 74756 KB Output is correct
116 Correct 121 ms 71156 KB Output is correct
117 Correct 117 ms 71240 KB Output is correct
118 Correct 418 ms 76192 KB Output is correct
119 Correct 402 ms 76096 KB Output is correct
120 Correct 334 ms 75968 KB Output is correct
121 Correct 136 ms 71200 KB Output is correct
122 Correct 331 ms 76096 KB Output is correct
123 Correct 326 ms 76092 KB Output is correct
124 Correct 324 ms 75968 KB Output is correct
125 Correct 138 ms 71184 KB Output is correct
126 Correct 231 ms 75984 KB Output is correct
127 Correct 215 ms 75964 KB Output is correct
128 Correct 206 ms 75968 KB Output is correct
129 Correct 131 ms 71208 KB Output is correct
130 Correct 197 ms 75968 KB Output is correct
131 Correct 185 ms 75972 KB Output is correct
132 Correct 179 ms 76096 KB Output is correct
133 Correct 122 ms 71212 KB Output is correct
134 Correct 184 ms 75712 KB Output is correct
135 Correct 174 ms 75456 KB Output is correct
136 Correct 175 ms 75624 KB Output is correct
137 Correct 117 ms 71184 KB Output is correct
138 Correct 174 ms 74640 KB Output is correct
139 Correct 176 ms 74688 KB Output is correct
140 Correct 177 ms 74432 KB Output is correct
141 Correct 116 ms 71212 KB Output is correct
142 Correct 317 ms 73348 KB Output is correct
143 Correct 330 ms 73492 KB Output is correct
144 Correct 324 ms 73392 KB Output is correct
145 Correct 325 ms 74068 KB Output is correct
146 Correct 318 ms 73984 KB Output is correct
147 Correct 316 ms 74112 KB Output is correct
148 Correct 318 ms 73928 KB Output is correct
149 Correct 310 ms 73944 KB Output is correct
150 Correct 308 ms 73824 KB Output is correct
151 Correct 308 ms 73544 KB Output is correct
152 Correct 110 ms 71132 KB Output is correct
153 Correct 318 ms 74048 KB Output is correct
154 Correct 321 ms 74008 KB Output is correct
155 Correct 314 ms 73936 KB Output is correct
156 Correct 310 ms 73944 KB Output is correct
157 Correct 323 ms 73768 KB Output is correct
158 Correct 317 ms 73736 KB Output is correct
159 Correct 312 ms 73580 KB Output is correct
160 Correct 109 ms 71152 KB Output is correct
161 Correct 307 ms 74688 KB Output is correct
162 Correct 315 ms 74796 KB Output is correct
163 Correct 313 ms 74688 KB Output is correct
164 Correct 316 ms 74768 KB Output is correct
165 Correct 317 ms 74692 KB Output is correct
166 Correct 106 ms 71216 KB Output is correct
167 Correct 223 ms 75332 KB Output is correct
168 Correct 214 ms 75304 KB Output is correct
169 Correct 214 ms 75212 KB Output is correct
170 Correct 209 ms 75200 KB Output is correct
171 Correct 222 ms 74500 KB Output is correct
172 Correct 249 ms 75452 KB Output is correct
173 Correct 316 ms 73788 KB Output is correct
174 Correct 333 ms 73664 KB Output is correct
175 Correct 326 ms 73844 KB Output is correct
176 Correct 268 ms 73664 KB Output is correct