HDOJ - Problem - Moving Tablesphp
桌子不必定從前日後搬,也可能從後往前搬,例如從 20 搬到 10 號位置,因此須要比較大小。佈局
注意對題意的理解,例如 1 -> 3 和 4 -> 6 雖然數字上沒有疊加區間,但在房間佈局上是有疊加區間的,因此須要對房間數 +1 後 ÷2 來獲得房間的「位置」。code
#include <stdio.h> #include <cstring> int main() { int t, n, a, b, max, rooms[205]; scanf("%d", &t); for (int i = 0; i < t; ++i) { memset(rooms, 0, sizeof(rooms)); scanf("%d", &n); for (int j = 0; j < n; ++j) { scanf("%d%d", &a, &b); if (a > b) { int tmp = b; b = a, a = tmp; } for (int k = (a + 1) / 2; k <= (b + 1) / 2; ++k) rooms[k]++; } max = rooms[1]; for (int l = 2; l <= 200; ++l) { if (rooms[l] > max) max = rooms[l]; } printf("%d\n", max * 10); } return 0; }