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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 |
---|---|---|---|---|---|---|---|---|---|
#288108 | #7510. Independent Set | 1kri | WA | 68ms | 68848kb | C++14 | 3.4kb | 2023-12-21 21:46:33 | 2023-12-21 21:46:33 |
Judging History
answer
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
using namespace std;
namespace Grader{
int e[4005][4005];
int _cnt;
vector<int> ask(vector<int> a){
int l=(int)a.size();
_cnt+=l;
vector<int> ans(l);
for (int i=0;i<l;i++)
for (int j=0;j<i;j++)
ans[i]+=e[min(a[i],a[j])][max(a[i],a[j])];
return ans;
}
int cnt[4005][4005];
vector<pair<int,int>> qwq[10005];
void work(int now,int l,int r){
if (l==r){
for (int i=0;i<(int)qwq[now].size();i++)
cnt[l][qwq[now][i].first]=qwq[now][i].second;
cnt[l][l]=ask({l,l})[1];
return;
}
sort(qwq[now].begin(),qwq[now].end());
int mid=(l+r)/2;
vector<int> ovo;
for (int i=l;i<=mid;i++)ovo.push_back(i);
for (int i=0;i<(int)qwq[now].size();i++)ovo.push_back(qwq[now][i].first);
vector<int> awa=ask(ovo);
for (int i=0;i<(int)qwq[now].size();i++){
int p=awa[mid-l+1+i];
for (int j=0;j<i;j++)p-=cnt[qwq[now][j].first][qwq[now][i].first];
if (p>0)qwq[now*2].push_back(make_pair(qwq[now][i].first,p));
if (p<qwq[now][i].second)qwq[now*2+1].push_back(make_pair(qwq[now][i].first,qwq[now][i].second-p));
}
work(now*2+1,mid+1,r);
ovo.clear(),awa.clear();
for (int i=l;i<=r;i++)ovo.push_back(i);
awa=ask(ovo);
for (int i=0;i<r-mid;i++){
int p=awa[mid-l+1+i];
for (int j=0;j<i;j++)p-=cnt[mid+1+j][mid+1+i];
if (p>0)qwq[now*2].push_back(make_pair(mid+1+i,p));
}
work(now*2,l,mid);
return;
}
void main(){
freopen("7510.in","r",stdin);
freopen("7510.out","w",stdout);
int n,m;
cin>>n>>m;
for (int i=1;i<=m;i++){
int a,b;
cin>>a>>b;
e[min(a,b)][max(a,b)]++;
}
work(1,1,n);
cout<<_cnt<<endl;
for (int i=1;i<=n;i++)
for (int j=i;j<=n;j++)
if (cnt[i][j]!=e[i][j])cout<<"QwQ"<<endl;
return;
}
}
vector<int> ask(vector<int> a){
int l=(int)a.size();
cout<<"? "<<l<<' ';
for (int i=0;i<l;i++)cout<<a[i]<<' ';
cout<<endl;
vector<int> ans(l);
for (int i=0;i<l;i++)cin>>ans[i];
return ans;
}
int cnt[4005][4005];
vector<pair<int,int>> qwq[10005];
void work(int now,int l,int r){
if (l==r){
for (int i=0;i<(int)qwq[now].size();i++)
cnt[l][qwq[now][i].first]=qwq[now][i].second;
cnt[l][l]=ask({l,l})[1];
return;
}
sort(qwq[now].begin(),qwq[now].end());
int mid=(l+r)/2;
vector<int> ovo;
for (int i=l;i<=mid;i++)ovo.push_back(i);
for (int i=0;i<(int)qwq[now].size();i++)ovo.push_back(qwq[now][i].first);
vector<int> awa=ask(ovo);
for (int i=0;i<(int)qwq[now].size();i++){
int p=awa[mid-l+1+i];
for (int j=0;j<i;j++)p-=cnt[qwq[now][j].first][qwq[now][i].first];
if (p>0)qwq[now*2].push_back(make_pair(qwq[now][i].first,p));
if (p<qwq[now][i].second)qwq[now*2+1].push_back(make_pair(qwq[now][i].first,qwq[now][i].second-p));
}
work(now*2+1,mid+1,r);
ovo.clear(),awa.clear();
for (int i=l;i<=r;i++)ovo.push_back(i);
awa=ask(ovo);
for (int i=0;i<r-mid;i++){
int p=awa[mid-l+1+i];
for (int j=0;j<i;j++)p-=cnt[mid+1+j][mid+1+i];
if (p>0)qwq[now*2].push_back(make_pair(mid+1+i,p));
}
work(now*2,l,mid);
return;
}
int main(){
int n;
cin>>n;
work(1,1,n);
int m=0;
for (int i=1;i<=n;i++)
for (int j=i;j<=n;j++)
for (int k=1;k<=cnt[i][j];k++)
m++;
cout<<"! "<<m<<' ';
for (int i=1;i<=n;i++)
for (int j=i;j<=n;j++)
for (int k=1;k<=cnt[i][j];k++)
cout<<i<<' '<<j<<' ';
cout<<endl;
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 5884kb
input:
4 0 2 0 0 1 0 0 0 0 0 2 1 0 0 1 0 0 0 2 0 0
output:
? 2 1 2 ? 1 3 ? 2 4 4 ? 2 3 4 ? 2 3 3 ? 4 1 2 3 4 ? 2 1 3 ? 2 2 2 ? 2 1 2 ? 2 1 1 ! 4 1 2 1 2 1 3 4 4
result:
ok Ok, Accepted!
Test #2:
score: -100
Wrong Answer
time: 68ms
memory: 68848kb
input:
4000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 2 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 2 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0...
output:
? 2000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 1...
result:
wrong answer Wrong graph