Submission #288838

#	Time	Username	Problem	Language	Result	Execution time	Memory
288838		YJU	Selling RNA Strands (JOI16_selling_rna)	C++14	35 / 100	430 ms	421368 KiB

selling_rna

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef long double ld;
const ll MOD=1e9+7;
const ll N=1e6+5;
const ld pi=3.14159265359;
const ll INF=(1LL<<60);
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(a) (ll)a.size()

ll trie[N][5],sz[N],ti=1,n,m,ans[N],mi[N],ma[N];
string s[N],pre[N],suf[N];
vector<ll> l[N],r[N];

ll to(char c){
	if(c=='A')return 1;
	if(c=='G')return 2;
	if(c=='C')return 3;
	if(c=='U')return 4;
}

void ins(ll id){
	ll j=1;
	REP(i,SZ(s[id])){
		if(!trie[j][to(s[id][i])])trie[j][to(s[id][i])]=++ti;
		mi[j]=(mi[j]?mi[j]:id);
		ma[j]=id;
		++sz[j];
		j=trie[j][to(s[id][i])];
	}
	++sz[j];
	mi[j]=(mi[j]?mi[j]:id);
	ma[j]=id;
}

pll range(string &ts){
	ll j=1;
	REP(i,SZ(ts)){
		if(!trie[j][to(ts[i])])return mp(0,0);
		j=trie[j][to(ts[i])];
	}
	return mp(mi[j],ma[j]);
}

ll ask(string &ts){
	ll j=1;
	REP(i,SZ(ts)){
		if(!trie[j][to(ts[i])])return 0;
		j=trie[j][to(ts[i])];
	}
	return sz[j];
}

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>n>>m;
	REP1(i,n)cin>>s[i];
	REP1(i,m)cin>>pre[i]>>suf[i];
	sort(s+1,s+n+1);
	REP1(i,n)ins(i);
	REP1(i,m){
		reverse(suf[i].begin(),suf[i].end());
		pll tmp=range(pre[i]);
		if(tmp.X)l[tmp.X-1].pb(i);
		r[tmp.Y].pb(i);
	}
	memset(sz,0,sizeof(sz));memset(trie,0,sizeof(trie));
	REP1(i,n){
		reverse(s[i].begin(),s[i].end());
		ins(i);
		for(auto j:l[i])ans[j]-=ask(suf[j]);
		for(auto j:r[i])ans[j]+=ask(suf[j]);
	}
	REP1(i,m)cout<<ans[i]<<"\n";
	return 0;
}

Compilation message (stderr)

selling_rna.cpp: In function 'll to(char)':
selling_rna.cpp:29:1: warning: control reaches end of non-void function [-Wreturn-type]
   29 | }
      | ^

• Subtask 1: 10 / 10
• Subtask 2: 0 / 25
• Subtask 3: 25 / 25
• Subtask 4: 0 / 40