Database UVa1592

本题很迷，并不知道错在哪，以下给出AC代码。

去掉memset后wa，我写的输入数据库，使用getline()函数，并用‘,’作为分隔符，提交WA。

不做以上修改仍然可过udebug，很迷，搞不懂。
#include <iostream>#include <map>#include <vector>#include <string>#include <cstring>using namespace std;map<string, int> ID;vector<string> getStr;//int table[10010][15];vector<int> table[10010];int getID(string& x){ if (ID.count(x)) return ID[x]; getStr.push_back(x); return ID[x] = getStr.size() - 1;}struct point { int x; int y; point(int x1, int x2) :x(x1), y(x2) {};};bool operator<(const point& x1, const point& x2){ return x1.x < x2.x || x1.x == x2.x && x1.y < x2.y;}map<point, int> check;void read(int n){ string str; char ch = getchar(); for(int i = 0; i < n; i++) while (true) { ch = getchar(); if (ch == '\n' || ch == '\r') { if (!str.empty()) table[i].push_back(getID(str)); str.clear(); break; } if (ch == ',') { table[i].push_back(getID(str)); str.clear(); } else str += ch; }}int main(){ //freopen("in.txt", "r", stdin); //freopen("out.txt", "w", stdout); int n, m; while (cin >> n >> m) { /*for (int i = 0; i < n; i++) { cin.get(); for (int j = 0; j < m - 1; j++) { string str; getline(cin, str, ','); table[i][j] = getID(str); } string str; cin >> str; table[i][m - 1] = getID(str); }*/ read(n); int flag = 1; for (int c1 = 0; c1 < m; c1++) for (int c2 = c1 + 1; c2 < m; c2++) { if (flag) { check.clear(); for (int i = 0; i < n; i++) { point x(table[i][c1], table[i][c2]); if (check.count(x)) { flag = 0; cout << "NO" << endl << check[x] + 1 << ' ' << i + 1 << endl << c1 + 1 << ' ' << c2 + 1 << endl; break; } check[x] = i; } } } if (flag) cout << "YES" << endl; memset(table, 0, sizeof table); ID.clear(); getStr.clear(); } return 0;}