习题5-8 图书管理习题（Borrowers，ACM/ICPC World Finals 1994， UVa230）

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原题链接：https://vjudge.net/problem/UVA-230
分类：STL综合
备注：中级模拟
分析：按题目意思来模拟就可以了，但是排序有点麻烦…
代码如下：

#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<algorithm>
using namespace std;
string line, mingz, zuoz;
struct BOOK
{string name, aut;bool operator < (BOOK b){if (aut == b.aut)return name < b.name;return aut < b.aut;}
};
vector<BOOK>book;
vector<int>flag;
int main(void)
{while (getline(cin, line)){if (line[0] == 'E')break;for (int pos = 1; pos < line.length(); pos++){if (line[pos] == '\"')mingz.assign(line, 0, pos + 1);if (line[pos] == 'b' && line[pos + 1] == 'y' && line[pos + 2] == ' '){zuoz.assign(line, pos + 3, line.length() - pos - 3);break;}}book.push_back(BOOK{ mingz, zuoz });flag.push_back(0);}sort(book.begin(), book.end());map<string, int>f;for (int xb = 0; xb != book.size(); ++xb)f[book[xb].name] = xb;vector<int>ret;while (getline(cin, line)){if (line[0] == 'E')break;if (line[0] == 'S'){sort(ret.begin(), ret.end());for (int i = 0; i != ret.size(); i++){int before;for (before = ret[i] - 1; before >= 0; before--)if (!flag[before])break;if (before == -1)cout << "Put " << book[ret[i]].name << " first\n";else cout << "Put " << book[ret[i]].name << " after " << book[before].name << "\n";flag[ret[i]] = 0;}ret.clear();cout << "END\n";}else{mingz.assign(line, 7, line.length() - 7);if (line[0] == 'B')flag[f[mingz]] = 1;else if (line[0] == 'R')ret.push_back(f[mingz]);}}return 0;
}