QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#545776 | #6355. 5 | lifan | TL | 1994ms | 8644kb | C++14 | 1.3kb | 2024-09-03 17:11:04 | 2024-09-03 17:11:04 |
Judging History
answer
//
/*
感觉对于一个T而言符合要求的k应该是一段区间
如果这样是对的,那么可以对于每个T求得最少元素个数和最大元素个数
其实也就是例如min:
f[i,j]=min(f[i-1,j],f[i-1,j-a[j]]+1)
g[i,j]=max(g[i-1,j],g[i-1,j-a[j]]+1)
然后这东西怎么优化,感觉有凸性
注意到S与n同级,说明只有O(sqrt n) 个不同的数
那就多重背包
*/
#include<bits/stdc++.h>
using namespace std;
#define N 205000
#define M 801
int f[2][N],g[2][N],S,n,m,q[N],h,t,c[205050];
#define pr pair<int,int>
#define mk make_pair
int a[N];
int main(){
ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
cin>>n>>S;
for(int i=1;i<=n;++i)cin>>a[i];
sort(a+1,a+n+1);
memset(f,0x3f,sizeof f);
memset(g,-0x3f,sizeof g);
f[0][0]=g[0][0]=0;
for(int i=1;i<=n;++i){
int s=i&1,t=s^1;
for(int j=0;j<=S;++j){
f[s][j]=f[t][j];
if(j>=a[i])f[s][j]=min(f[s][j],f[t][j-a[i]]+1);
}
}
for(int i=1;i<=n;++i){
int s=i&1,t=s^1;
for(int j=0;j<=S;++j){
g[s][j]=g[t][j];
if(j>=a[i])g[s][j]=max(g[s][j],g[t][j-a[i]]+1);
}
}
long long res=0;
for(int j=0;j<=S;++j)res+=max(0,g[n&1][j]-f[n&1][j]+1);
cout<<res<<"\n";
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 7312kb
input:
7 9 0 0 0 1 1 2 5
output:
42
result:
ok 1 number(s): "42"
Test #2:
score: 0
Accepted
time: 1ms
memory: 8468kb
input:
10 33 9 9 8 1 1 1 1 1 1 1
output:
48
result:
ok 1 number(s): "48"
Test #3:
score: 0
Accepted
time: 1ms
memory: 7924kb
input:
10 14 2 4 4 1 0 1 0 1 0 1
output:
81
result:
ok 1 number(s): "81"
Test #4:
score: 0
Accepted
time: 2ms
memory: 7736kb
input:
10 14 3 5 3 0 1 0 1 0 1 0
output:
87
result:
ok 1 number(s): "87"
Test #5:
score: 0
Accepted
time: 1ms
memory: 7920kb
input:
40 50 1 1 1 1 3 3 0 3 1 1 0 0 2 1 0 0 1 0 0 2 7 1 2 1 3 0 2 2 3 1 1 0 0 2 0 1 1 0 1 1
output:
1067
result:
ok 1 number(s): "1067"
Test #6:
score: 0
Accepted
time: 0ms
memory: 7444kb
input:
1200 1000 1 1 2 3 0 1 0 0 1 1 0 2 3 0 1 2 0 0 1 0 4 1 1 2 1 1 0 0 1 1 0 1 0 0 1 0 1 0 0 0 1 1 0 1 0 0 1 0 0 1 1 0 1 2 0 4 0 3 1 6 0 1 1 0 0 0 0 4 0 0 0 0 0 0 1 0 0 1 7 1 1 1 0 1 0 1 0 1 1 0 0 1 1 1 3 0 1 0 1 0 0 1 1 2 2 0 1 1 0 0 1 4 1 2 0 0 0 3 0 0 2 1 0 2 0 0 0 1 1 0 0 2 0 0 0 0 1 1 0 1 0 1 6 1 1 ...
output:
737899
result:
ok 1 number(s): "737899"
Test #7:
score: 0
Accepted
time: 224ms
memory: 8644kb
input:
12000 10000 1 1 0 0 1 0 2 1 3 0 0 1 0 3 1 1 0 1 1 1 1 1 2 1 0 1 2 1 0 1 2 0 5 1 1 1 0 2 0 1 0 1 0 3 2 0 1 0 1 1 2 1 0 0 1 1 0 1 0 0 0 1 0 1 0 1 0 4 0 1 3 1 0 0 1 0 1 2 1 0 0 1 1 0 2 1 1 0 1 0 1 0 0 2 1 1 3 0 1 1 1 0 0 0 1 1 1 0 3 0 0 0 2 0 0 0 1 0 2 0 1 1 1 0 0 1 0 1 0 2 0 0 0 0 0 0 0 1 0 1 0 0 4 1 ...
output:
73685347
result:
ok 1 number(s): "73685347"
Test #8:
score: 0
Accepted
time: 1994ms
memory: 7568kb
input:
36000 30000 0 3 4 1 2 1 1 0 0 1 1 0 1 0 2 1 0 0 0 0 2 1 0 2 0 0 0 0 0 1 1 4 1 4 0 0 2 0 0 0 1 1 0 0 1 1 0 1 0 0 0 0 1 1 0 3 1 1 1 0 0 0 0 0 0 1 2 0 2 3 0 0 0 0 3 1 0 0 0 1 0 1 2 0 0 2 0 1 0 0 2 1 1 0 3 1 6 0 0 1 1 2 0 1 2 0 0 1 0 1 1 0 0 1 0 0 0 1 0 2 0 1 1 1 0 0 5 2 0 5 1 0 0 0 0 1 1 1 8 0 1 1 0 1 ...
output:
658813003
result:
ok 1 number(s): "658813003"
Test #9:
score: -100
Time Limit Exceeded
input:
200000 200000 0 1 1 1 1 1 0 1 0 3 1 0 0 1 1 0 1 1 1 2 3 0 1 0 1 0 2 5 0 1 1 4 1 1 0 0 0 0 0 0 2 1 0 0 2 1 1 2 0 3 0 1 3 0 1 1 1 0 1 0 1 2 0 1 1 0 0 2 2 1 0 1 1 2 4 1 0 2 0 5 1 2 0 0 1 0 2 3 1 0 1 1 1 1 0 0 0 5 1 0 0 1 2 1 1 0 0 0 1 0 0 1 2 1 0 0 2 1 2 3 0 0 3 1 0 1 0 0 1 1 1 0 1 0 1 0 0 1 0 0 1 1 1 ...