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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#389406 | #1085. Brave Seekers of Unicorns | Sround | WA | 24ms | 136004kb | C++14 | 1.1kb | 2024-04-14 11:33:02 | 2024-04-14 11:33:02 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
inline int read()
{
int x=0;bool f=0;char ch=getchar();
while(ch<'0' || ch>'9') {if(ch=='-') f=1;ch=getchar();}
while(ch>='0' && ch<='9') x=(x<<3)+(x<<1)+(ch^48),ch=getchar();
return f?-x:x;
}
#define x first
#define y second
#define pb push_back
#define rep(i,a,b) for(int i=(a);i<=(b);i++)
#define per(i,a,b) for(int i=(a);i>=(b);i--)
typedef pair<int,int> PII;
typedef long long LL;
typedef unsigned long long ull;
const int N=510;
int n,MOD;
int f[N][N][N];
int sum[N][N];
void solve1()
{
rep(i,1,n) f[1][i][0]=sum[1][i]=1;
rep(i,2,n) {
sum[2][i]=i-1;
rep(j,1,i-1) f[2][i][j]=1;
}
rep(i,3,n) rep(j,i,n) rep(k,i-1,j-1) {
f[i][j][k]=((sum[i-1][k]-(((j^k)<k)?f[i-1][k][j^k]:0))%MOD+MOD)%MOD;
(sum[i][j]+=f[i][j][k])%=MOD;
}
int ans=0;
// cout<<sum[3][3]<<endl;
rep(i,1,n) rep(j,i,n) ans=(ans+sum[i][j])%MOD;
printf("%d\n",ans);
}
void solve2()
{
}
int main()
{
n=read(),MOD=998244353;
if(n==1) puts("1");
else if(n<=500) solve1();
else if(n<=5000) solve2();
else puts("0");
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3536kb
input:
1
output:
1
result:
ok 1 number(s): "1"
Test #2:
score: 0
Accepted
time: 0ms
memory: 5924kb
input:
2
output:
3
result:
ok 1 number(s): "3"
Test #3:
score: 0
Accepted
time: 0ms
memory: 7968kb
input:
3
output:
6
result:
ok 1 number(s): "6"
Test #4:
score: 0
Accepted
time: 0ms
memory: 9952kb
input:
5
output:
26
result:
ok 1 number(s): "26"
Test #5:
score: 0
Accepted
time: 24ms
memory: 136004kb
input:
322
output:
782852421
result:
ok 1 number(s): "782852421"
Test #6:
score: 0
Accepted
time: 2ms
memory: 14168kb
input:
10
output:
728
result:
ok 1 number(s): "728"
Test #7:
score: 0
Accepted
time: 0ms
memory: 69072kb
input:
100
output:
234222727
result:
ok 1 number(s): "234222727"
Test #8:
score: -100
Wrong Answer
time: 0ms
memory: 3728kb
input:
10000
output:
0
result:
wrong answer 1st numbers differ - expected: '348787098', found: '0'