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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#32221 | #2571. Aidana and Pita | RobeZH# | WA | 110ms | 12488kb | C++ | 1.4kb | 2022-05-18 06:00:48 | 2022-05-18 06:00:50 |
Judging History
answer
#include<bits/stdc++.h>
#define rep(i,n) for(int i=1;i<=n;++i)
#define st first
#define nd second
using namespace std;
typedef long long ll;
typedef pair<int,int> pr;
const int N=30;
int a[N],n;
int dp[1<<25],to[1<<25],sum=0;
int ot[N];
int main() {
//scanf("%d",&n);
n=20;
rep(i,n){
//scanf("%d",a+i);
a[i]=i*i;
sum+=a[i];
}
for(int mk=1;mk<1<<n;++mk){
dp[mk]=sum;
for(int j=0;j<n;++j)if(mk&(1<<j)){
int now=dp[mk-(1<<j)];
if(now<0)now+=a[j+1];else now-=a[j+1];
if(abs(now)<abs(dp[mk])){
dp[mk]=now;
to[mk]=j;
}
}
}
int ans=sum+1,is=0;
for(int mk=0;mk<1<<n;++mk){
int s=0;
for(int j=0;j<n;++j)if(mk&(1<<j))
s+=a[j+1];
int u=s,v=(sum-s-dp[(1<<n)-1-mk])/2,w=(sum-s+dp[(1<<n)-1-mk])/2;
int nw=max(abs(u-v),max(abs(v-w),abs(w-u)));
if(ans>nw){
ans=nw;
is=(1<<n)-1-mk;
}
}
for(int j=0;j<n;++j)if(!(is&(1<<j)))ot[j+1]=3;
while(is>0){
int nxt=is-(1<<to[is]);
ot[to[is]+1]=(dp[nxt]<0?1:2);
is=nxt;
}
//printf("%d\n",ans);
rep(i,n)printf("%d%c",ot[i]," \n"[i==n]);
return 0;
}
/*
20
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
*/
Details
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Test #1:
score: 0
Wrong Answer
time: 110ms
memory: 12488kb
input:
5 2 3 1 4 2
output:
2 3 2 1 2 2 3 3 3 3 3 3 3 2 3 1 2 1 1 2
result:
wrong answer expected 0, found 2