标签:style http color io os ar for sp on
开线段树专题开出了这题。。看似要用区间合并求连续最大区间,其实不需要。因为询问才100个,直接set暴力去模拟即可,每次车进来就从左往右找到一个合适位置
代码:
#include <cstdio> #include <cstring> #include <set> using namespace std; const int N = 100005; int L, b, f, n; set<int> g; set<int>::iterator u, v; int save[N][2]; int main() { scanf("%d%d%d", &L, &b, &f); scanf("%d", &n); g.insert(-b); g.insert(L + f); int op, x; for (int i = 1; i <= n; i++) { scanf("%d%d", &op, &x); if (op == 1) { int flag = 1; for (u = g.begin(); u != g.end(); u++) { v = u; v++; if (v != g.end() && *u + b + x + f <= *v) { g.insert(*u + b); g.insert(*u + b + x); save[i][0] = *u + b; save[i][1] = *u + b + x; printf("%d\n", *u + b); flag = 0; break; } u++; } if (flag) printf("-1\n"); } else { g.erase(save[x][0]); g.erase(save[x][1]); } } return 0; }
Codeforces 46D Parking Lot(贪心模拟)
标签:style http color io os ar for sp on
原文地址:http://blog.csdn.net/accelerator_/article/details/40072617