A 1141 PAT Ranking of Institutions (25分)

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一、技术总结

二、参考代码

#include<iostream>
#include<vector>
#include<algorithm>
#include<set>
#include<map>
using namespace std;
struct node_i{
	string name;
	double all_score;
	int num;
};
bool cmp(node_i a, node_i b){
	if(a.all_score != b.all_score) return a.all_score > b.all_score;
	else if(a.num != b.num) return a.num < b.num;
	else return a.name < b.name;
}
int main(){
	int n, index = 0;
	vector<node_i> v;
	map<string, int> f;
	set<string> e_sch;
	scanf("%d", &n);
	for(int i = 0; i < n; i++){
		string s, sch;
		double sc;
		cin >> s >> sc >> sch;
		transform(sch.begin(), sch.end(), sch.begin(), ::tolower);
		if(e_sch.find(sch) != e_sch.end()){
			if(s[0] == ‘B‘) v[f[sch]].all_score += sc/1.5;
			else if(s[0] == ‘A‘) v[f[sch]].all_score += sc;
			else v[f[sch]].all_score += sc*1.5;
			v[f[sch]].num++;
		}else{
			double temp_sc;
			if(s[0] == ‘B‘) temp_sc = sc/1.5;
			else if(s[0] == ‘A‘) temp_sc = sc;
			else temp_sc = sc*1.5;
			v.push_back(node_i{sch, temp_sc, 1});
			e_sch.insert(sch);
			f[sch] = index++;
		}
	}
	for(int i = 0; i < v.size(); i++){
		v[i].all_score = int(v[i].all_score);
	} 
	sort(v.begin(), v.end(), cmp);
	int rank;
	cout << e_sch.size() << endl;
	for(int i = 1; i <= v.size(); ++i){
		if(i != 1 && v[i-1].all_score == v[i-2].all_score){
			cout << rank << " " << v[i-1].name << " " << int(v[i-1].all_score) << " " << v[i-1].num << endl;
		}else{
			cout << i << " " << v[i-1].name << " " << int(v[i-1].all_score) << " " << v[i-1].num << endl;
			rank = i;
		}
	}
	return 0;
}

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