PAT 甲级 1141 PAT Ranking of Institutions (25 分)
思路:
1.以校名为索引存储相关信息;
2.定义符合题意的sort()排序;
代码:
#include<iostream>
#include<unordered_map>
#include<string>
#include<cctype>
#include<vector>
#include<algorithm>
using namespace std;
struct ins{
string code;
int tws,score[3]={0},ns;
};
bool cmp(const ins & a,const ins & b){
return a.tws==b.tws?(a.ns==b.ns?a.code<b.code:a.ns<b.ns):a.tws>b.tws;
}
int main(){
int n;
cin>>n;
unordered_map<string,ins> mp;
for(int i=0;i<n;i++){
string id,code;
int score;
cin>>id>>score>>code;
for(int j=0;j<code.length();j++) code[j]=tolower(code[j]);
mp[code].ns++;
id[0]=='B'||id[0]=='A'?mp[code].score['B'-id[0]]+=score:mp[code].score[2]+=score;
}
vector<ins> v;
for(auto e:mp)
{
ins i;
i.code=e.first;
i.tws=e.second.score[0]/1.5+e.second.score[1]+e.second.score[2]*1.5;
i.ns=e.second.ns;
v.push_back(i);
}
sort(v.begin(),v.end(),cmp);
int rank=1,size=v.size();
printf("%d\n",size);
for(int i=0;i<size;i++)
if(i==0||v[i].tws==v[i-1].tws) printf("%d %s %d %d\n",rank,v[i].code.c_str(),v[i].tws,v[i].ns);
else{
printf("%d %s %d %d\n",i+1,v[i].code.c_str(),v[i].tws,v[i].ns);
rank=i+1;
}
return 0;
}