Submission #1007642

#TimeUsernameProblemLanguageResultExecution timeMemory
1007642simona1230Selling RNA Strands (JOI16_selling_rna)C++17
0 / 100
350 ms578476 KiB
#include<bits/stdc++.h> using namespace std; struct rect { int xl,xr,yl,yr; rect() {} }; struct node { char let; int l,r; node* c[27]; vector<int> idx,qr; node() { for(int i=0; i<26; i++) c[i]=nullptr; } }; node* pf=new node(); node* sf=new node(); int n,m; string s[100001],pq[100001],sq[100001]; pair<int,int> p[100001]; rect q[100001]; void add(string x,int z,int t) { node* curr=pf; for(int i=0; i<x.size(); i++) { int y=(int)(x[i]-'A'); if(curr->c[y]==nullptr) { if(t==2)return; curr->c[y]=new node(); } curr=curr->c[y]; curr->let=x[i]; } if(t==1)curr->idx.push_back(z); else curr->qr.push_back(z); curr=sf; for(int i=x.size()-1; i>=0; i--) { int y=x[i]-'A'; if(curr->c[y]==nullptr) curr->c[y]=new node(); curr=curr->c[y]; curr->let=x[i]; } curr->idx.push_back(z); } int num; void dfs(node* i,int t) { //cout<<i->let<<endl; num++; i->l=num; for(int j=0; j<i->idx.size(); j++) { if(t==1)p[i->idx[j]].first=num; else p[i->idx[j]].second=num; } for(int j=0; j<26; j++) { if(i->c[j]!=nullptr) { dfs(i->c[j],t); } } //cout<<"out"<<endl; i->r=num; for(int j=0; j<i->qr.size(); j++) { if(t==1) { q[i->qr[j]].xl=i->l; q[i->qr[j]].xr=i->r; } else { q[i->qr[j]].yl=i->l; q[i->qr[j]].yr=i->r; } } } void read() { cin>>n>>m; for(int i=1; i<=n; i++) { cin>>s[i]; add(s[i],i,1); } for(int i=1; i<=m; i++) { cin>>pq[i]>>sq[i]; node* curr=pf; for(int j=0; j<pq[i].size(); j++) { int y=(int)(pq[i][j]-'A'); if(curr->c[y]==nullptr) break; curr=curr->c[y]; if(j==pq[i].size()-1) curr->qr.push_back(i); } reverse(sq[i].begin(),sq[i].end()); curr=sf; for(int j=0; j<sq[i].size(); j++) { int y=(int)(sq[i][j]-'A'); if(curr->c[y]==nullptr) break; curr=curr->c[y]; if(j==sq[i].size()-1) curr->qr.push_back(i); } } } bool cmp(pair<int,int> p1,pair<int,int> p2) { return p1.second<p2.second; } struct line { int l,r,y,i,mt; line(){} line(int _l,int _r,int _y,int _i,int _mt) { l=_l; r=_r; y=_y; i=_i; mt=_mt; } }; vector<line> v; bool cmp2(line l1,line l2) { return l1.y<l2.y; } int t[9000001]; void update(int i,int l,int r,int idx) { if(l==r) { t[i]++; return; } int md=(l+r)/2; if(idx<=md)update(i*2,l,md,idx); else update(i*2+1,md+1,r,idx); t[i]=t[i*2]+t[i*2+1]; } int query(int i,int l,int r,int ql,int qr) { //cout<<l<<" "<<r<<" "<<ql<<" "<<qr<<endl; if(ql>qr)return 0; if(ql<=l&&r<=qr)return t[i]; int md=(l+r)/2; return query(i*2,l,md,ql,min(qr,md))+query(i*2+1,md+1,r,max(md+1,ql),qr); } int ans[100001]; void solve() { sort(p+1,p+n+1,cmp); for(int i=1;i<=m;i++) { if(q[i].xl==0||q[i].yl==0)continue; v.push_back({q[i].xl,q[i].xr,q[i].yl-1,i,-1}); v.push_back({q[i].xl,q[i].xr,q[i].yr,i,1}); } sort(v.begin(),v.end(),cmp2); int j=1; for(int i=0;i<v.size();i++) { line l=v[i]; while(j<=n&&p[j].second<=l.y) { //cout<<j<<endl; update(1,1,2*1e6+5,p[j].first); j++; } ans[l.i]=l.mt*query(1,1,2*1e6+5,l.l,l.r); } for(int i=1;i<=m;i++) cout<<ans[i]<<endl; } int main() { read(); dfs(pf,1); num=0; dfs(sf,2); /* for(int i=1; i<=n; i++) cout<<p[i].first<<" "<<p[i].second<<endl; for(int i=1; i<=m; i++) cout<<q[i].xl<<" "<<q[i].xr<<" "<<q[i].yl<<" "<<q[i].yr<<endl; */ solve(); return 0; }

Compilation message (stderr)

selling_rna.cpp: In function 'void add(std::string, int, int)':
selling_rna.cpp:35:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for(int i=0; i<x.size(); i++)
      |                  ~^~~~~~~~~
selling_rna.cpp: In function 'void dfs(node*, int)':
selling_rna.cpp:72:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |     for(int j=0; j<i->idx.size(); j++)
      |                  ~^~~~~~~~~~~~~~
selling_rna.cpp:88:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |     for(int j=0; j<i->qr.size(); j++)
      |                  ~^~~~~~~~~~~~~
selling_rna.cpp: In function 'void read()':
selling_rna.cpp:116:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  116 |         for(int j=0; j<pq[i].size(); j++)
      |                      ~^~~~~~~~~~~~~
selling_rna.cpp:123:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  123 |             if(j==pq[i].size()-1)
      |                ~^~~~~~~~~~~~~~~~
selling_rna.cpp:129:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  129 |         for(int j=0; j<sq[i].size(); j++)
      |                      ~^~~~~~~~~~~~~
selling_rna.cpp:136:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |             if(j==sq[i].size()-1)
      |                ~^~~~~~~~~~~~~~~~
selling_rna.cpp: In function 'void solve()':
selling_rna.cpp:207:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<line>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  207 |     for(int i=0;i<v.size();i++)
      |                 ~^~~~~~~~~
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