500 A is scary.

Don't know about SNUKE, but I am definitely crying :| .

Please somebody help me understand the first problem :|

TestCase1 Walkthrough :

N = 8 , Q = 3

Lets say my initial array is [0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 ].

Operation 1 : (p1,v1) => (1,8)

Operation 2 : (p2,v2) => (8,1)

Operation 3 : (p3,v3) => (2,1)

For any operation, we do either of these two. Either set all the values from prefix array ( 1 <= i <= p[i]) or set all the values in suffix array ( p[i] <= i <= N ) equal to v[i]. Make sure, while setting the new values , the old value shouldn't be strictly greater than v[i]. otherwise it invalid sequence of operation.

Now, I can do operation 3 on this array, and it will become [ 0 , 1 , 1 , 1 , 1 , 1 , 1 , 1 ]

Then, I can apply Operation 1 on this array, and array will become [ 8 , 1 ,1 , 1 , 1 , 1 , 1 , 1 ]

Then I can apply Operation 2 on the array, and array stays the same. Why would SNUKE CRY in this sequence of operation ?

thanks for the round

C was a different problem than usual, and it was kinda fun. (I did not believe my solution could be intended but it was :) )

Why does A even have n as input? It's completely irrelevant

C can be solve in time irrelevant to $$$n$$$, so $$$n$$$ can actually be up to $$$10^{10^5}$$$

Problem D for $$$M=3$$$ with the same solution. https://atcoder.jp/contests/agc052/tasks/agc052_e

how to make spj for problem B. I did one,but i think too slow

#include "testlib.h"
#include<bits/stdc++.h>
using namespace std;
int main(int argc, char * argv[]) {
    setName("compares two signed integers");
    registerTestlibCmd(argc, argv);
    int vv=inf.readInt();
    for(int i=1;i<=vv;i++){
    	int n=inf.readInt(),k=inf.readInt();
    	int maxx=(1<<k)-1;
    	set<int>SA,SO;
    	for(int qq=1;qq<=n;qq++){
    		int x=ans.readInt(1,maxx),y=ouf.readInt(1,maxx),t=1;
    		for(int j=0;j<=k;j++){
    			SA.insert(x/t);SO.insert(y/t);
    			t*=2;
    		}
    	}
	    if (SA.size() != SO.size())
	    	quitf(_wa, "wa on %d th data",i);
	}
	quitf(_ok,"right");
}

In E, can we please get an English editorial that links to an English article/editorial instead of what I assume is Japanese? It may be somewhat manageable with focusing on formulas and using autotranslate, but the standard language of communication in computer science is still English.

BTW E is solvable with a $$$O(M+f(N))$$$ bruteforce for floor sum since $$$M$$$ is relatively small and there's no multitest. Some constant optimisation is necessary, but nothing ridiculously hard.