C. Jury Marks 这个题目虽然是只有1600,但是还是挺思维的. 有点难想. 应该可以比较快的推出的是这个肯定和前缀和有关, x x+a1 x+a1+a2 x+a1+a2+a3... x+sum=b 所以我们可以通过b来枚举每一个x,如果这个x可以满足找到m个b,那就说明这个x是合理的. 但是要注意的是,这个sum的去重,为什么要去重呢,因为如果不去虫,就是找到两个相同的 因为x=b-sum 所以可以只要枚举b[1]即可,因为对于每一个b,其中一个确定之后,剩下的b的位置也固定了.…
C. Jury Marks time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Polycarp watched TV-show where k jury members one by one rated a participant by adding him a certain number of points (may be…
第一次做交互真有趣……:挺好的细节思维题 This is an interactive problem. In good old times dwarves tried to develop extrasensory abilities: Exactly n dwarves entered completely dark cave. Each dwarf received a hat — white or black. While in cave, none of the dwarves was…
C. Jury Marks time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Polycarp watched TV-show where k jury members one by one rated a participant by adding him a certain number of points (may be…
C. Nice Garland time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You have a garland consisting of nn lamps. Each lamp is colored red, green or blue. The color of the ii-th lamp is sisi ('R',…