oj.uz

Submission #343260

# Submission time Handle Problem Language Result Execution time Memory
343260 2021-01-03T15:21:37 Z mp007mp Selling RNA Strands (JOI16_selling_rna) C++14
100 / 100
 1199 ms 132584 KB 
#include<bits/stdc++.h>
#define S second
#define F first
using namespace std;
typedef long long int ll;
typedef pair<int,int> pii;
int inf = 1e9;
const int maxn = 1e5+20;
vector<string> vec;
vector<string> tmp;
vector<string> seg[maxn*4];
string nxt(string s){
	int n = s.size();
	string t=s;
	t[n-1]++;
	return t;
}
void RVR(string&s){
	int n = s.size();
	for(int i=0,j=n-1;i < j;i++,j--){
		swap(s[i],s[j]);
	}
}
void build(int s,int e,int v){
	if(e-s<2){
		seg[v].push_back(tmp[s]);
		return;
	}
	int mid = (s+e)/2;
	build(s,mid,2*v);
	build(mid,e,2*v+1);
	int l=0,r=0;
	while(l<seg[2*v].size() || r<seg[2*v+1].size()){
		if(l>=seg[2*v].size() || (r<seg[2*v+1].size() && seg[2*v+1][r]<=seg[2*v][l])){
			seg[v].push_back(seg[2*v+1][r]);
			r++;
		}else{
			seg[v].push_back(seg[2*v][l]);
			l++;
		}
	}
}
int ans(int s,int e,int v,int l,int r,string ll,string rr){
	if(l<=s && e<=r){
		return lower_bound(seg[v].begin(),seg[v].end(),rr)-lower_bound(seg[v].begin(),seg[v].end(),ll);
	}
	if(l>=e || s>=r){
		return 0;
	}
	int mid = (s+e)/2;
	return ans(s,mid,2*v,l,r,ll,rr)+ans(mid,e,2*v+1,l,r,ll,rr);
}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int n,m;
	cin>>n>>m;
	for(int i=0;i<n;i++){
		string s;
		cin>>s;
		vec.push_back(s);
	}
	sort(vec.begin(),vec.end());
	for(string s:vec){
		RVR(s);
		tmp.push_back(s);
	}
	int sz = tmp.size();
	build(0,sz,1);
	for(int i=0;i<m;i++){
		string p,q;
		cin>>p>>q;
		int l = lower_bound(vec.begin(),vec.end(),p)-vec.begin();
		int r = lower_bound(vec.begin(),vec.end(),nxt(p))-vec.begin();
		RVR(q);
		//cout<<l<<" "<<r<<"\n";
		cout<<ans(0,sz,1,l,r,q,nxt(q))<<"\n";
	}


	return 0;
}

Compilation message

selling_rna.cpp: In function 'void build(int, int, int)':
selling_rna.cpp:33:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |  while(l<seg[2*v].size() || r<seg[2*v+1].size()){
      |        ~^~~~~~~~~~~~~~~~
selling_rna.cpp:33:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |  while(l<seg[2*v].size() || r<seg[2*v+1].size()){
      |                             ~^~~~~~~~~~~~~~~~~~
selling_rna.cpp:34:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |   if(l>=seg[2*v].size() || (r<seg[2*v+1].size() && seg[2*v+1][r]<=seg[2*v][l])){
      |      ~^~~~~~~~~~~~~~~~~
selling_rna.cpp:34:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |   if(l>=seg[2*v].size() || (r<seg[2*v+1].size() && seg[2*v+1][r]<=seg[2*v][l])){
      |                             ~^~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9708 KB Output is correct
2 Correct 7 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 7 ms 9708 KB Output is correct
6 Correct 7 ms 9708 KB Output is correct
7 Correct 7 ms 9708 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 38508 KB Output is correct
2 Correct 99 ms 44392 KB Output is correct
3 Correct 126 ms 41580 KB Output is correct
4 Correct 123 ms 44648 KB Output is correct
5 Correct 73 ms 33000 KB Output is correct
6 Correct 73 ms 33384 KB Output is correct
7 Correct 80 ms 31596 KB Output is correct
8 Correct 87 ms 44420 KB Output is correct
9 Correct 105 ms 44392 KB Output is correct
10 Correct 105 ms 44392 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 212 ms 47460 KB Output is correct
2 Correct 191 ms 30052 KB Output is correct
3 Correct 246 ms 42340 KB Output is correct
4 Correct 167 ms 36196 KB Output is correct
5 Correct 152 ms 29796 KB Output is correct
6 Correct 214 ms 42340 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9708 KB Output is correct
2 Correct 7 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 7 ms 9708 KB Output is correct
6 Correct 7 ms 9708 KB Output is correct
7 Correct 7 ms 9708 KB Output is correct
8 Correct 51 ms 38508 KB Output is correct
9 Correct 99 ms 44392 KB Output is correct
10 Correct 126 ms 41580 KB Output is correct
11 Correct 123 ms 44648 KB Output is correct
12 Correct 73 ms 33000 KB Output is correct
13 Correct 73 ms 33384 KB Output is correct
14 Correct 80 ms 31596 KB Output is correct
15 Correct 87 ms 44420 KB Output is correct
16 Correct 105 ms 44392 KB Output is correct
17 Correct 105 ms 44392 KB Output is correct
18 Correct 212 ms 47460 KB Output is correct
19 Correct 191 ms 30052 KB Output is correct
20 Correct 246 ms 42340 KB Output is correct
21 Correct 167 ms 36196 KB Output is correct
22 Correct 152 ms 29796 KB Output is correct
23 Correct 214 ms 42340 KB Output is correct
24 Correct 231 ms 51172 KB Output is correct
25 Correct 376 ms 51060 KB Output is correct
26 Correct 207 ms 51044 KB Output is correct
27 Correct 286 ms 51044 KB Output is correct
28 Correct 1199 ms 132584 KB Output is correct
29 Correct 616 ms 88260 KB Output is correct