https://www.acmicpc.net/problem/17135
N과 M
https://www.acmicpc.net/problem/2559
15:34~15:47
https://www.acmicpc.net/problem/11659
15:48~ 15:50
https://www.acmicpc.net/problem/17390
15:51~15:55
https://www.acmicpc.net/problem/10986
15:55~16:22
https://www.acmicpc.net/problem/3020
16:22~15:25
https://www.acmicpc.net/problem/17435
에휴....
https://www.acmicpc.net/problem/2042
세그로 한번 쿼리로 한번 펜윅으로도 한번
https://www.acmicpc.net/problem/9426
측정 완료