There are NN light bulbs indexed from 00 to N-1N−1. Initially, all of them are off. A FLIP operation switches the state of a contiguous subset of bulbs. FLIP(L, R)FLIP(L,R)means to flip all bulbs xx such that L \leq x \leq RL≤x≤R. So for example, FLI…
Light Bulbs Time Limit: 2 Seconds Memory Limit: 65536 KB Wildleopard had fallen in love with his girlfriend for 20 years. He wanted to end the long match for their love and get married this year. He bought a new house for his family and hired a…
MS Memory Limit:65536KB 64bit IO Format:%lld & %llu SubmitStatusid=14946">Practiceid=14946">ZOJ 2976 Description Wildleopard had fallen in love with his girlfriend for 20 years. He wanted to end the long match for their love and…
B. Light bulbs There are NNN light bulbs indexed from 000 to N−1N-1N−1. Initially, all of them are off. A FLIP operation switches the state of a contiguous subset of bulbs. FLIP(L,R)FLIP(L, R)FLIP(L,R) means to flip all bulbs xxx such that L≤x≤RL \le…
2019 ICPC Asia Nanjing Regional A - Hard Problem 计蒜客 - 42395 若 n = 10,可以先取:6,7,8,9,10.然后随便从1,2,3,4,5里面选一个都肯定符合题意 若 n = 9,可以先取:5,6,7,8,9,然后随便从1,2,3,4里面选一个都肯定符合题意. 所以答案就是后半部分的数量+1 #include <cstdio> #include <iostream> #include <cmath> #inc…
题目:https://nanti.jisuanke.com/t/41399 思路:差分数组 区间内操作次数为奇数次则灯为打开状态 #include<bits/stdc++.h> using namespace std; map<int,int>mp; int main() { int T; scanf("%d",&T); int n,m; int l,r; ;i<=T;i++) { mp.clear(); scanf("%d%d"…
