Submission #3882846

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Source Code Expand

#include <stdio.h>  
#include <algorithm>  
#include <assert.h>
#include <bitset>
#include <cmath>  
#include <complex>  
#include <deque>  
#include <functional>  
#include <iostream>  
#include <limits.h>  
#include <map>  
#include <math.h>  
#include <queue>  
#include <set>  
#include <stdlib.h>  
#include <string.h>  
#include <string>  
#include <time.h>  
#include <unordered_map>  
#include <unordered_set>  
#include <vector>  

#pragma warning(disable:4996)  
#pragma comment(linker, "/STACK:336777216")  
using namespace std;

#define mp make_pair  
#define Fi first  
#define Se second  
#define pb(x) push_back(x)  
#define szz(x) ((int)(x).size())  
#define rep(i, n) for(int i=0;i<n;i++)  
#define all(x) (x).begin(), (x).end()  
#define ldb ldouble  

typedef unsigned int uint;
typedef tuple<int, int, int> t3;
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ldb;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
typedef pair <ll, int> pli;
typedef pair <db, db> pdd;

int IT_MAX = 1 << 19;
const ll MOD = 1000000007;
const int INF = 0x3f3f3f3f;
const ll LL_INF = 0x3f3f3f3f3f3f3f3f;
const db PI = acos(-1);
const db ERR = 1e-10;

const int MX = 5005;
const int MM = 998244353;

int C[MX][MX];

ll H(ll n, ll k){ 
	return n+k-1 < 0 || k < 0? 0 : C[n+k-1][k];
}

int N, K;
ll solve(int n, int k, int K){
	ll ans = 0;
	for(int i = 0; i <= k; i++){
		ll v = H(K, n - 2*i) * C[k][i] % MM;
		if(i%2 == 0) ans = (ans + v) % MM;
		else ans = (ans + MM - v) % MM;
	}
	return ans;
}

int main()
{
	C[0][0] = 1;
	for(int i = 1; i < MX; i++){
		C[i][0] = 1;
		for(int j = 1; j <= i; j++) C[i][j] = (C[i-1][j-1] + C[i-1][j]) % MM;
	}
	scanf("%d%d", &K, &N);
	if(K == 1) return !printf("0\n");
	for(int k = 2; k <= 2*K; k++){
		ll ans = 0;
		int v = min((k-1)/2, (2*K-k+1)/2);
		if(k%2 == 0) ans = (solve(N-1, v, K-1) + solve(N, v, K-1)) % MM;
		else ans = solve(N, v, K);
		printf("%lld\n", ans);
	}
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:81:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &K, &N);
                       ^

Judge Result