#include <limits.h> #include <stdio.h> int main() { int L, M; scanf("%d %d", &L, &M); //总共有L + 1棵树 //M代表区域的个数 int sum = 0; int shuzu[L + 1]; for (int i = 0; i < L + 1; i++){ shuzu[i] = 0; } while (M--) { int a, b; scanf("%d %d", &a, &b); //闭区间输入 if ...