QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#489221 | #9156. 百万富翁 | huangzirui | 100 ✓ | 2669ms | 124056kb | C++14 | 4.3kb | 2024-07-24 19:02:26 | 2024-07-24 19:02:27 |
Judging History
answer
#include "richest.h"
#include<bits/stdc++.h>
#define pii pair<int,int>
#define mp make_pair
#define ll long long
using namespace std;
namespace sub1{
const int maxn=1010;
int n=1000;
vector<int>A,B;
int is[maxn][maxn];
int solve(int N){
n=N;
A.clear();B.clear();
for(int i=0;i<n;i++)
for(int j=i+1;j<n;j++){
A.push_back(i);
B.push_back(j);
// cerr<<i<<' '<<j<<"|"<<n<<endl;
}
auto C=ask(A,B);int cnt=0;
for(int i=0;i<n;i++)
for(int j=i+1;j<n;j++){
is[i][j]=(C[cnt++]==i);
is[j][i]=1-is[i][j];
}
for(int i=0;i<n;i++){
bool flg=true;
for(int j=0;j<n;j++)
if(i!=j && !is[i][j])flg=false;
if(flg)return i;
}
assert(0);
}
}
namespace sub2{
const int maxn=1000010,maxt=21;
const int maxm=510;
int n,s,t;
int dp[maxn][maxt];
// int to[maxn][maxt];
bool is[maxn][maxt];
int dp2[maxm][maxt][maxm];
pii to[maxn][maxt];
const int tMax[25]={0,0,20,6,3,2,1,1,1};
int dfs(int N,int T){
if(is[N][T])return dp[N][T];
to[N][T]=mp(N,1);
if(N==1)return 0;
if(T==1)return (int)min(1000000000ll,1ll*N*(N-1)/2);
else{
// if(rand()%3000==0)cerr<<"dfs "<<N<<' '<<T<<' '<<is[N][T]<<endl;
int ans=1e9,chs=0,si=-1;
for(int i=1;i<=tMax[T];i++){
// use i+1 / i
int t=N/i;
int lst=N-t*i;
int numI1=lst,numI=t-lst;
if(numI<0)continue;
if(i==1)numI1=N/2,numI=N&1;
int cntI1=(i*(i-1)/2),cntI=(i+1)*i/2;
int Gap=max(1,(numI)/(i+1)/500);
for(;numI>=0;numI1+=i*Gap,numI-=(i+1)*Gap){
int tans=dfs(numI+numI1,T-1)+numI*cntI1+numI1*cntI;
if(tans<ans){
ans=tans;
chs=i;
si=numI;
// if(T==8)cerr<<"si="<<si<<endl;
}
}
}
is[N][T]=1;to[N][T]=mp(chs,si);
return dp[N][T]=ans;
}
}
bool ok[maxn];
int solve(int N,int S,int T){
memset(ok,0,sizeof(ok));
T=8;dfs(N,T);
// cerr<<' '<<dp[N][T]<<endl;
// return 1;
n=N;s=S;t=T;
vector<int>now;
for(int i=0;i<n;i++)now.push_back(i);
int tnow=T;
while(now.size()!=1){
int ntmp=now.size();
int y=to[ntmp][tnow].first;
// cerr<<" "<<ntmp<<' '<<y<<' '<<tnow<<"|"<<to[ntmp][tnow].second<<endl;
int t=ntmp/y;
int numI=to[ntmp][tnow].second,numI1=(now.size()-y*numI)/(y+1);
// if(y==1)numI1=ntmp/2,numI=ntmp&1;
tnow--;
int cnt=0;
vector<int>q1,q2;
// cerr<<"now.size()="<<now.size()<<" | "<<y<<' '<<tnow<<" | "<<numI<<' '<<numI1<<endl;
for(int i=1;i<=numI;i++){
vector<int>u;
for(int j=1;j<=y;j++)
u.push_back(now[cnt+j-1]);
cnt+=y;
for(int j=0;j<y;j++)
for(int k=j+1;k<y;k++){
q1.push_back(u[j]);
q2.push_back(u[k]);
}
}
for(int i=1;i<=numI1;i++){
vector<int>u;
for(int j=1;j<=y+1;j++)
u.push_back(now[cnt+j-1]);
cnt+=y+1;
for(int j=0;j<y+1;j++)
for(int k=j+1;k<y+1;k++){
q1.push_back(u[j]);
q2.push_back(u[k]);
}
}
// cerr<<q1.size()<<endl;
vector<int> ret=ask(q1,q2);
for(int i=0;i<ret.size();i++)
ok[q1[i]+q2[i]-ret[i]]=1;
now.clear();
for(int i=0;i<n;i++)
if(!ok[i])now.push_back(i);
// cerr<<now.size()<<endl;
}
return now[0];
}
}
int richest(int N, int T, int S) {
if(N<=1000)return sub1::solve(N);
return sub2::solve(N,S,T);
}
Details
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Pretests
Pretest #1:
score: 15
Accepted
time: 624ms
memory: 25836kb
input:
1000 1 499500 957319859
output:
Correct 7127326332295218295 1.000000 1331569654267968081
result:
points 1.0 Correct
Pretest #2:
score: 85
Accepted
time: 2669ms
memory: 122168kb
input:
1000000 20 2000000 29091473
output:
Correct Case 2, 85 / 85, maxt = 8, maxs = 1099944 7610580723948932399 1.000000 1331569654267968081
result:
points 1.0 Correct Case 2, 85 / 85, maxt = 8, maxs = 1099944
Final Tests
Test #1:
score: 15
Accepted
time: 614ms
memory: 24652kb
input:
1000 1 499500 957319857
output:
Correct 7127326332295218295 1.000000 1331569654267968081
result:
points 1.0 Correct
Test #2:
score: 85
Accepted
time: 2668ms
memory: 124056kb
input:
1000000 20 2000000 29091471
output:
Correct Case 2, 85 / 85, maxt = 8, maxs = 1099944 7610580723948932399 1.000000 1331569654267968081
result:
points 1.0 Correct Case 2, 85 / 85, maxt = 8, maxs = 1099944