oj.uz

Submission #835091

# Submission time Handle Problem Language Result Execution time Memory
835091 2023-08-23T08:03:58 Z sunwukong123 Event Hopping 2 (JOI21_event2) C++14
100 / 100
 333 ms 118220 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long 
void debug_out() {cerr<<endl;}
template <typename Head, typename... Tail>
void debug_out(Head _H, Tail... _T) {cerr<<" "<<to_string(_H);debug_out(_T...);}
#define debug(...) cerr<<"["<<#__VA_ARGS__<<"]:",debug_out(__VA_ARGS__)
const int MAXN = 400005;
const int inf=1000000500ll;
const int oo =1000000000000000000ll;
const int MOD = (int)1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef pair<int,int> pi;
int n,k;
array<int,3> A[MAXN];
int rtwok[MAXN][20];
int ltwok[MAXN][20];
struct node1 {
	int s,e,m,val;
	node1 *l, *r;
	node1 (int _s, int _e){
		s=_s;e=_e;m=(s+e)/2;
		val=inf;
		if(s!=e){
			l=new node1(s,m);
			r=new node1(m+1,e);
		}
	}
	void update(int x, int nval){
		if(s==e){
			val=min(val,nval);
			return;
		}
		if(x>m)r->update(x,nval);
		else l->update(x,nval);
		val=min(l->val,r->val);
	}
	int query(int x, int y){
		if(s==x&&e==y){
			return val;
		}
		if(x>m)return r->query(x,y);
		else if(y<=m)return l->query(x,y);
		else return min(l->query(x,m), r->query(m+1,y));
	}
}*mnseg;
struct node2{
	int s,e,m,val;
	node2 *l, *r;
	node2 (int _s, int _e){
		s=_s;e=_e;m=(s+e)/2;
		val=-1;
		if(s!=e){
			l=new node2(s,m);
			r=new node2(m+1,e);
		}
	}
	void update(int x, int nval){
		if(s==e){
			val=max(val,nval);
			return;
		}
		if(x>m)r->update(x,nval);
		else l->update(x,nval);
		val=max(l->val,r->val);
	}
	int query(int x, int y){
		if(s==x&&e==y){
			return val;
		}
		if(x>m)return r->query(x,y);
		else if(y<=m)return l->query(x,y);
		else return max(l->query(x,m), r->query(m+1,y));
	}
}*mxseg;
map<int,int> to_n;
map<int,int> to_1;
map<int,int>mapper;
struct fenw {
	int fw[MAXN], fw2[MAXN];
	void update(int x, int y, int v) { //inclusive
	    for (int tx=x; tx < MAXN; tx += tx&(-tx)) fw[tx] += v, fw2[tx] -= v*(x-1);
	    for (int ty=y+1; ty < MAXN; ty += ty&(-ty)) fw[ty] -= v, fw2[ty] += v*y; 
	}
	int sum (int x) {
	    int res = 0;
	    for (int tx=x; tx; tx -= tx&(-tx)) res += fw[tx]*x + fw2[tx];
	    return res;    
	}
	int range_sum(int x, int y) { //inclusive
	    return sum(y)-sum(x-1);
	}
}fw;
int query(int L, int R){
	int res=0;
	for(int k=19;k>=0;k--){
		if(rtwok[L][k] != -1 && rtwok[L][k]<=R){
			res+=1<<k;
			L=rtwok[L][k];
		}
	}
	return res;
}
int32_t main() 
{
	ios_base::sync_with_stdio(0); cin.tie(0);
	cin >> n >> k;
	int m=2*n+2;
	memset(rtwok,-1,sizeof rtwok);
	mnseg=new node1(0,m);

	vector<pair<int,int>> in;
	vector<int> disc;
	for(int i=1;i<=n;i++){
		int a,b; cin >> a >> b;
		in.push_back({a,b});
		disc.push_back(a);
		disc.push_back(b);
	}
	sort(disc.begin(),disc.end());
	disc.resize(unique(disc.begin(),disc.end())-disc.begin());
	for(int i=0;i<(int)disc.size();i++){
		mapper[disc[i]]=i+1;
	}

	for(int i=1;i<=n;i++){

		A[i][0] = mapper[in[i-1].first];
		A[i][1] = mapper[in[i-1].second];
		A[i][2] = i;
	}
	for(int i=1;i<=n;i++){
		mnseg->update(A[i][0],A[i][1]);
	}
	for(int i=0;i<=m;i++){
		rtwok[i][0]=mnseg->query(i,m);
		if(rtwok[i][0]==inf)rtwok[i][0]=-1;
	}
	for(int i=m;i>=0;i--){
		for(int j=1;j<=19;j++){
			if(rtwok[i][j-1] == -1)continue;
			rtwok[i][j]=rtwok[rtwok[i][j-1]][j-1];
		}
	}
	vector<int>out;
	int sum = query(1,m);
	set<pi> s;
	s.insert({0,0});
	s.insert({m,m});
	for(int i=1;i<=n;i++){
		int L=A[i][0], R=A[i][1];

		if(fw.range_sum(L,R-1)>0){
			continue;
		}
		auto iter=s.lower_bound({L,-inf});
		int lf=prev(iter)->second;
		int rg=iter->first;
		if(sum+query(lf,L)+query(R,rg)-query(lf,rg)+1>=k && (int)out.size()<k){

			out.push_back(i);
			fw.update(A[i][0],A[i][1]-1,1);
			sum+=query(lf,L)+query(R,rg)-query(lf,rg)+1;
			s.insert({L,R});
		}
		
	}
	if(out.empty())cout<<-1<<'\n';
	else{

		assert((int)out.size()==k);
		for(auto x:out)cout<<x<<"\n";
	}
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 63060 KB Output is correct
2 Correct 22 ms 63060 KB Output is correct
3 Correct 23 ms 62932 KB Output is correct
4 Correct 227 ms 116572 KB Output is correct
5 Correct 224 ms 116056 KB Output is correct
6 Correct 223 ms 115508 KB Output is correct
7 Correct 221 ms 114476 KB Output is correct
8 Correct 231 ms 116564 KB Output is correct
9 Correct 225 ms 116148 KB Output is correct
10 Correct 224 ms 115496 KB Output is correct
11 Correct 215 ms 114520 KB Output is correct
12 Correct 194 ms 113784 KB Output is correct
13 Correct 192 ms 113468 KB Output is correct
14 Correct 191 ms 113044 KB Output is correct
15 Correct 192 ms 112340 KB Output is correct
16 Correct 155 ms 110352 KB Output is correct
17 Correct 157 ms 110228 KB Output is correct
18 Correct 157 ms 109912 KB Output is correct
19 Correct 150 ms 109504 KB Output is correct
20 Correct 150 ms 109496 KB Output is correct
21 Correct 153 ms 109528 KB Output is correct
22 Correct 149 ms 109016 KB Output is correct
23 Correct 156 ms 108888 KB Output is correct
24 Correct 157 ms 108764 KB Output is correct
25 Correct 155 ms 106836 KB Output is correct
26 Correct 157 ms 106756 KB Output is correct
27 Correct 160 ms 106704 KB Output is correct
28 Correct 171 ms 106204 KB Output is correct
29 Correct 170 ms 106296 KB Output is correct
30 Correct 161 ms 106176 KB Output is correct
31 Correct 169 ms 106292 KB Output is correct
32 Correct 161 ms 106224 KB Output is correct
33 Correct 171 ms 106284 KB Output is correct
34 Correct 183 ms 110892 KB Output is correct
35 Correct 181 ms 109292 KB Output is correct
36 Correct 187 ms 107744 KB Output is correct
37 Correct 190 ms 113328 KB Output is correct
38 Correct 188 ms 113012 KB Output is correct
39 Correct 190 ms 112620 KB Output is correct
40 Correct 185 ms 112356 KB Output is correct
41 Correct 182 ms 112092 KB Output is correct
42 Correct 177 ms 106192 KB Output is correct
43 Correct 202 ms 112984 KB Output is correct
44 Correct 199 ms 112848 KB Output is correct
45 Correct 190 ms 112608 KB Output is correct
46 Correct 195 ms 112220 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 63060 KB Output is correct
2 Correct 23 ms 62932 KB Output is correct
3 Correct 24 ms 63060 KB Output is correct
4 Correct 23 ms 63060 KB Output is correct
5 Correct 25 ms 63008 KB Output is correct
6 Correct 24 ms 63060 KB Output is correct
7 Correct 24 ms 63052 KB Output is correct
8 Correct 24 ms 63060 KB Output is correct
9 Correct 24 ms 63060 KB Output is correct
10 Correct 24 ms 63060 KB Output is correct
11 Correct 24 ms 62884 KB Output is correct
12 Correct 23 ms 63052 KB Output is correct
13 Correct 24 ms 63060 KB Output is correct
14 Correct 23 ms 62992 KB Output is correct
15 Correct 24 ms 62932 KB Output is correct
16 Correct 24 ms 63060 KB Output is correct
17 Correct 24 ms 63060 KB Output is correct
18 Correct 23 ms 63060 KB Output is correct
19 Correct 23 ms 62932 KB Output is correct
20 Correct 24 ms 62932 KB Output is correct
21 Correct 23 ms 63060 KB Output is correct
22 Correct 28 ms 63180 KB Output is correct
23 Correct 24 ms 63060 KB Output is correct
24 Correct 23 ms 62932 KB Output is correct
25 Correct 23 ms 62924 KB Output is correct
26 Correct 25 ms 63060 KB Output is correct
27 Correct 24 ms 63052 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 63060 KB Output is correct
2 Correct 23 ms 62932 KB Output is correct
3 Correct 24 ms 63060 KB Output is correct
4 Correct 23 ms 63060 KB Output is correct
5 Correct 25 ms 63008 KB Output is correct
6 Correct 24 ms 63060 KB Output is correct
7 Correct 24 ms 63052 KB Output is correct
8 Correct 24 ms 63060 KB Output is correct
9 Correct 24 ms 63060 KB Output is correct
10 Correct 24 ms 63060 KB Output is correct
11 Correct 24 ms 62884 KB Output is correct
12 Correct 23 ms 63052 KB Output is correct
13 Correct 24 ms 63060 KB Output is correct
14 Correct 23 ms 62992 KB Output is correct
15 Correct 24 ms 62932 KB Output is correct
16 Correct 24 ms 63060 KB Output is correct
17 Correct 24 ms 63060 KB Output is correct
18 Correct 23 ms 63060 KB Output is correct
19 Correct 23 ms 62932 KB Output is correct
20 Correct 24 ms 62932 KB Output is correct
21 Correct 23 ms 63060 KB Output is correct
22 Correct 28 ms 63180 KB Output is correct
23 Correct 24 ms 63060 KB Output is correct
24 Correct 23 ms 62932 KB Output is correct
25 Correct 23 ms 62924 KB Output is correct
26 Correct 25 ms 63060 KB Output is correct
27 Correct 24 ms 63052 KB Output is correct
28 Correct 32 ms 64460 KB Output is correct
29 Correct 27 ms 64468 KB Output is correct
30 Correct 27 ms 64460 KB Output is correct
31 Correct 27 ms 64460 KB Output is correct
32 Correct 27 ms 64332 KB Output is correct
33 Correct 27 ms 64252 KB Output is correct
34 Correct 27 ms 64196 KB Output is correct
35 Correct 29 ms 64624 KB Output is correct
36 Correct 29 ms 64588 KB Output is correct
37 Correct 28 ms 64596 KB Output is correct
38 Correct 28 ms 64212 KB Output is correct
39 Correct 29 ms 64592 KB Output is correct
40 Correct 36 ms 64584 KB Output is correct
41 Correct 33 ms 64588 KB Output is correct
42 Correct 28 ms 64220 KB Output is correct
43 Correct 29 ms 64460 KB Output is correct
44 Correct 27 ms 64464 KB Output is correct
45 Correct 28 ms 64468 KB Output is correct
46 Correct 27 ms 64212 KB Output is correct
47 Correct 28 ms 64460 KB Output is correct
48 Correct 27 ms 64460 KB Output is correct
49 Correct 28 ms 64452 KB Output is correct
50 Correct 27 ms 64212 KB Output is correct
51 Correct 27 ms 64460 KB Output is correct
52 Correct 27 ms 64352 KB Output is correct
53 Correct 27 ms 64460 KB Output is correct
54 Correct 30 ms 64204 KB Output is correct
55 Correct 28 ms 64468 KB Output is correct
56 Correct 27 ms 64460 KB Output is correct
57 Correct 27 ms 64472 KB Output is correct
58 Correct 28 ms 64468 KB Output is correct
59 Correct 30 ms 64460 KB Output is correct
60 Correct 27 ms 64332 KB Output is correct
61 Correct 28 ms 64468 KB Output is correct
62 Correct 27 ms 64332 KB Output is correct
63 Correct 27 ms 64340 KB Output is correct
64 Correct 27 ms 64076 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 63060 KB Output is correct
2 Correct 22 ms 63060 KB Output is correct
3 Correct 23 ms 62932 KB Output is correct
4 Correct 227 ms 116572 KB Output is correct
5 Correct 224 ms 116056 KB Output is correct
6 Correct 223 ms 115508 KB Output is correct
7 Correct 221 ms 114476 KB Output is correct
8 Correct 231 ms 116564 KB Output is correct
9 Correct 225 ms 116148 KB Output is correct
10 Correct 224 ms 115496 KB Output is correct
11 Correct 215 ms 114520 KB Output is correct
12 Correct 194 ms 113784 KB Output is correct
13 Correct 192 ms 113468 KB Output is correct
14 Correct 191 ms 113044 KB Output is correct
15 Correct 192 ms 112340 KB Output is correct
16 Correct 155 ms 110352 KB Output is correct
17 Correct 157 ms 110228 KB Output is correct
18 Correct 157 ms 109912 KB Output is correct
19 Correct 150 ms 109504 KB Output is correct
20 Correct 150 ms 109496 KB Output is correct
21 Correct 153 ms 109528 KB Output is correct
22 Correct 149 ms 109016 KB Output is correct
23 Correct 156 ms 108888 KB Output is correct
24 Correct 157 ms 108764 KB Output is correct
25 Correct 155 ms 106836 KB Output is correct
26 Correct 157 ms 106756 KB Output is correct
27 Correct 160 ms 106704 KB Output is correct
28 Correct 171 ms 106204 KB Output is correct
29 Correct 170 ms 106296 KB Output is correct
30 Correct 161 ms 106176 KB Output is correct
31 Correct 169 ms 106292 KB Output is correct
32 Correct 161 ms 106224 KB Output is correct
33 Correct 171 ms 106284 KB Output is correct
34 Correct 183 ms 110892 KB Output is correct
35 Correct 181 ms 109292 KB Output is correct
36 Correct 187 ms 107744 KB Output is correct
37 Correct 190 ms 113328 KB Output is correct
38 Correct 188 ms 113012 KB Output is correct
39 Correct 190 ms 112620 KB Output is correct
40 Correct 185 ms 112356 KB Output is correct
41 Correct 182 ms 112092 KB Output is correct
42 Correct 177 ms 106192 KB Output is correct
43 Correct 202 ms 112984 KB Output is correct
44 Correct 199 ms 112848 KB Output is correct
45 Correct 190 ms 112608 KB Output is correct
46 Correct 195 ms 112220 KB Output is correct
47 Correct 28 ms 63060 KB Output is correct
48 Correct 23 ms 62932 KB Output is correct
49 Correct 24 ms 63060 KB Output is correct
50 Correct 23 ms 63060 KB Output is correct
51 Correct 25 ms 63008 KB Output is correct
52 Correct 24 ms 63060 KB Output is correct
53 Correct 24 ms 63052 KB Output is correct
54 Correct 24 ms 63060 KB Output is correct
55 Correct 24 ms 63060 KB Output is correct
56 Correct 24 ms 63060 KB Output is correct
57 Correct 24 ms 62884 KB Output is correct
58 Correct 23 ms 63052 KB Output is correct
59 Correct 24 ms 63060 KB Output is correct
60 Correct 23 ms 62992 KB Output is correct
61 Correct 24 ms 62932 KB Output is correct
62 Correct 24 ms 63060 KB Output is correct
63 Correct 24 ms 63060 KB Output is correct
64 Correct 23 ms 63060 KB Output is correct
65 Correct 23 ms 62932 KB Output is correct
66 Correct 24 ms 62932 KB Output is correct
67 Correct 23 ms 63060 KB Output is correct
68 Correct 28 ms 63180 KB Output is correct
69 Correct 24 ms 63060 KB Output is correct
70 Correct 23 ms 62932 KB Output is correct
71 Correct 23 ms 62924 KB Output is correct
72 Correct 25 ms 63060 KB Output is correct
73 Correct 24 ms 63052 KB Output is correct
74 Correct 32 ms 64460 KB Output is correct
75 Correct 27 ms 64468 KB Output is correct
76 Correct 27 ms 64460 KB Output is correct
77 Correct 27 ms 64460 KB Output is correct
78 Correct 27 ms 64332 KB Output is correct
79 Correct 27 ms 64252 KB Output is correct
80 Correct 27 ms 64196 KB Output is correct
81 Correct 29 ms 64624 KB Output is correct
82 Correct 29 ms 64588 KB Output is correct
83 Correct 28 ms 64596 KB Output is correct
84 Correct 28 ms 64212 KB Output is correct
85 Correct 29 ms 64592 KB Output is correct
86 Correct 36 ms 64584 KB Output is correct
87 Correct 33 ms 64588 KB Output is correct
88 Correct 28 ms 64220 KB Output is correct
89 Correct 29 ms 64460 KB Output is correct
90 Correct 27 ms 64464 KB Output is correct
91 Correct 28 ms 64468 KB Output is correct
92 Correct 27 ms 64212 KB Output is correct
93 Correct 28 ms 64460 KB Output is correct
94 Correct 27 ms 64460 KB Output is correct
95 Correct 28 ms 64452 KB Output is correct
96 Correct 27 ms 64212 KB Output is correct
97 Correct 27 ms 64460 KB Output is correct
98 Correct 27 ms 64352 KB Output is correct
99 Correct 27 ms 64460 KB Output is correct
100 Correct 30 ms 64204 KB Output is correct
101 Correct 28 ms 64468 KB Output is correct
102 Correct 27 ms 64460 KB Output is correct
103 Correct 27 ms 64472 KB Output is correct
104 Correct 28 ms 64468 KB Output is correct
105 Correct 30 ms 64460 KB Output is correct
106 Correct 27 ms 64332 KB Output is correct
107 Correct 28 ms 64468 KB Output is correct
108 Correct 27 ms 64332 KB Output is correct
109 Correct 27 ms 64340 KB Output is correct
110 Correct 27 ms 64076 KB Output is correct
111 Correct 240 ms 111040 KB Output is correct
112 Correct 221 ms 110808 KB Output is correct
113 Correct 246 ms 110492 KB Output is correct
114 Correct 237 ms 109288 KB Output is correct
115 Correct 227 ms 108892 KB Output is correct
116 Correct 260 ms 107840 KB Output is correct
117 Correct 264 ms 107868 KB Output is correct
118 Correct 331 ms 118220 KB Output is correct
119 Correct 333 ms 117576 KB Output is correct
120 Correct 266 ms 114652 KB Output is correct
121 Correct 258 ms 107952 KB Output is correct
122 Correct 271 ms 115480 KB Output is correct
123 Correct 269 ms 115040 KB Output is correct
124 Correct 278 ms 114652 KB Output is correct
125 Correct 285 ms 107980 KB Output is correct
126 Correct 244 ms 112200 KB Output is correct
127 Correct 225 ms 111980 KB Output is correct
128 Correct 239 ms 111828 KB Output is correct
129 Correct 249 ms 107968 KB Output is correct
130 Correct 229 ms 111172 KB Output is correct
131 Correct 235 ms 111192 KB Output is correct
132 Correct 229 ms 111268 KB Output is correct
133 Correct 254 ms 107848 KB Output is correct
134 Correct 241 ms 110804 KB Output is correct
135 Correct 226 ms 110648 KB Output is correct
136 Correct 226 ms 110528 KB Output is correct
137 Correct 254 ms 107904 KB Output is correct
138 Correct 320 ms 108640 KB Output is correct
139 Correct 228 ms 108504 KB Output is correct
140 Correct 225 ms 108596 KB Output is correct
141 Correct 244 ms 107860 KB Output is correct
142 Correct 191 ms 110860 KB Output is correct
143 Correct 190 ms 110932 KB Output is correct
144 Correct 194 ms 110832 KB Output is correct
145 Correct 183 ms 110964 KB Output is correct
146 Correct 179 ms 110696 KB Output is correct
147 Correct 180 ms 110480 KB Output is correct
148 Correct 182 ms 110316 KB Output is correct
149 Correct 185 ms 110216 KB Output is correct
150 Correct 178 ms 110004 KB Output is correct
151 Correct 176 ms 109072 KB Output is correct
152 Correct 145 ms 101724 KB Output is correct
153 Correct 191 ms 110940 KB Output is correct
154 Correct 179 ms 110700 KB Output is correct
155 Correct 187 ms 110544 KB Output is correct
156 Correct 180 ms 110296 KB Output is correct
157 Correct 194 ms 110132 KB Output is correct
158 Correct 179 ms 110044 KB Output is correct
159 Correct 177 ms 109016 KB Output is correct
160 Correct 140 ms 101720 KB Output is correct
161 Correct 248 ms 110992 KB Output is correct
162 Correct 243 ms 110900 KB Output is correct
163 Correct 250 ms 110720 KB Output is correct
164 Correct 238 ms 110476 KB Output is correct
165 Correct 243 ms 110420 KB Output is correct
166 Correct 173 ms 107872 KB Output is correct
167 Correct 197 ms 114652 KB Output is correct
168 Correct 190 ms 114516 KB Output is correct
169 Correct 205 ms 114132 KB Output is correct
170 Correct 190 ms 113884 KB Output is correct
171 Correct 184 ms 114264 KB Output is correct
172 Correct 197 ms 114988 KB Output is correct
173 Correct 225 ms 107124 KB Output is correct
174 Correct 228 ms 107172 KB Output is correct
175 Correct 223 ms 107008 KB Output is correct
176 Correct 213 ms 106312 KB Output is correct