Submission #678402

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
678402	2023-01-05 18:01:19	Ahmed57	Bootfall (IZhO17_bootfall)	C++17	100 / 100	514 ms	6136 KiB

bootfall

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/*
        IZhO 17-bootfall
    Do knapsack for the initial n items. We will store count[i] = how many subsets have sum i, mod some big prime.
    When we want to remove 1 item, we have to reverse the knapsack and then revert back to the initial state.
    At the end, we need to check how many differences appear in all of the n removals, and this can be counted with a frequency array.
*/
#include<bits/stdc++.h>
#define god dimasi5eks
#pragma GCC optimize("O3")
#define fi first
#define se second
#define pb push_back
#define pf push_front
#define mod 1000000007
#define dancila 3.14159265359
#define eps 1e-9
using namespace std;
typedef long long ll;
int add(int a, int b)
{
    ll x = a+b;
    if(x >= mod)
 
 
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• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 15 / 15
• Subtask 4: 16 / 16
• Subtask 5: 21 / 21
• Subtask 6: 35 / 35