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[題解]關鍵字搜尋模擬

a143. 關鍵字搜尋模擬

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#include <bits/stdc++.h>
#define ll long long
#define int long long
#define double long double
#define N 105
#define Orz ios::sync_with_stdio(0),cin.tie(0)
#define INF 2e18
#define rep(i,l,r) for(int i=l;i<=r;i++)
#define rrep(i,l,r) for(int i=l;i<r;i++)
#define pii pair<int,int>
#define pif pair<int,float>
#define x first
#define y second
using namespace std;
int n,num_key = 0;
string key[N];
vector<pif> ans;

int com_string(string s1, string s2){
s1 = "0"+s1;s2 = "0"+s2;
int ans = 0,com[N][N];memset(com,0,sizeof(com));
int len1 = s1.size(),len2 = s2.size();
for(int i=1;i<len1;i++){
for(int j=1;j<len2;j++){
if(s1[i] == s2[j]){
com[i][j] = com[i-1][j-1]+1;
ans = max(ans,com[i][j]);
}
}
}
return ans;
}

bool cmp(pif a,pif b){
if(a.y == b.y)return a.x < b.x;
return a.y > b.y;
}

float max_num(string s){
float ans = 0.0;
for(int i=0;i<num_key;i++){
ans = max(ans,(float)com_string(s,key[i])/key[i].size());
}
return ans;
}

signed main(){
string s;getline(cin,s);
stringstream ss(s);
while(ss>>key[num_key++]);
cin>>n;cin.ignore();
while(n--){
int doc_num;
getline(cin,s);
stringstream ss2(s);
ss2>>doc_num;
float score = 0.0;
while(ss2 >> s)score += max_num(s);

score = round(score*100)/100;
ans.push_back({doc_num,score});
}
sort(ans.begin(),ans.end(),cmp);
if(ans[0].y <= 0)cout<<"FALSE"<<endl;
else for(auto i: ans)cout<<i.x<<" ";
}