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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#798018 | #8363. interactive | L_Wave | 10 | 1432ms | 10064kb | C++20 | 4.2kb | 2024-12-03 23:12:42 | 2024-12-03 23:12:43 |
Judging History
answer
// Problem: #P13098. 交互题
// Author: XZC(L_Wave)
// Language: Cpp/G++20
// Contest: Hydro
// URL: http://www.nfls.com.cn:10611/p/5472
// Memory Limit: 512 MB
// Time Limit: 2000 ms
// Create Time: not 2024-12-03 20:49:39, but 1926-08-17 11:45:14
//
// Powered by CP Editor (https://cpeditor.org)
#ifndef LOCAL
#include"interactive.h"
#else
#include <vector>
#include <cstdio>
#include <cstdlib>
#include <numeric>
std::vector<int> solve(int n);
int query(std::vector<int> vec);
#define rep0(i, n) for(int i = 0; i < (int)(n); i ++)
#define rep1(i, n) for(int i = 1; i <= (int)(n); i ++)
using namespace std;
namespace
{
const int MAXN = 500, MAXQ = 300000;
int n, ty, p[505], mat[505][505], cnt;
bool vis[505];
bool legal(const vector<int>& arr)
{
if((int)arr.size() != n) return false;
rep1(i, n) vis[i] = false;
rep0(i, arr.size()) {
if(arr[i] < 1 || arr[i] > n || vis[arr[i]]) return false;
vis[arr[i]] = true;
}
return true;
}
}
int query(vector<int> arr)
{
if(cnt == MAXQ || !legal(arr)) {
printf("WA: 0\n"); exit(0);
}
int ret = 0;
rep0(i, (int)arr.size() - 1) ret += mat[arr[i]][arr[i + 1]];
cnt ++;
return ret;
}
int main()
{
scanf("%d%d", &ty, &n);
iota(p+1,p+n+1,1);
if (ty==1)
rep1(i, n) scanf("%d", &p[i]);
rep1(i, n - 1) mat[p[i]][p[i + 1]] = mat[p[i + 1]][p[i]] = 1;
vector<int> ans = solve(n);
if(!legal(ans)) printf("WA: 1\n");
else {
int sum = 0;
rep0(i, n - 1) sum += mat[ans[i]][ans[i + 1]];
if(sum == n - 1) printf("AC: %d\n", cnt);
else printf("WA: 1\n");
}
exit(0);
}
#endif
#include <bits/stdc++.h>
#undef rep
#define rep(i, a, b) for (int i = (a), i##ABRACADABRA = (b); i <= i##ABRACADABRA; i++)
#define drep(i, a, b) for (int i = (a), i##ABRACADABRA = (b); i >= i##ABRACADABRA; i--)
using namespace std;
using ll = long long;
namespace local{
vector<int>res;
mt19937 rng(chrono::steady_clock().now().time_since_epoch().count());
int id[505][505],p[505],n;
long double w[505][505];
bool vis[505];
void dfs(int u){
// cout<<u<<'\n';
res.push_back(u);
vis[u]=1;
rep(v,1,n)if (!vis[id[u][v]]){
dfs(id[u][v]);
return ;
}
}
int ask(){
vector<int>Q;
rep(i,1,n)Q.push_back(p[i]);
return query(Q);
}
void adj(vector<pair<int,int>>V,long double val){
val/=V.size();
for (auto [x,y]:V)w[x][y]=w[y][x]=(w[x][y]*10+val)/11;
}
std::vector<int> solve(int _n){
n=_n;
iota(p+1,p+n+1,1);
rep(i,1,n)rep(j,1,n){
if (i^j)w[i][j]=2.l/n;
else w[i][j]=-1e9;
}
rep(i,1,11000){
int shit=0;
while (++shit<=60){
shuffle(p+1,p+n+1,rng);
int salt=0;
rep(t,1,n-1){
salt+=w[p[t]][p[t+1]]<0||w[p[t]][p[t+1]]>0.9999;
if (salt>n/4)break;
}
if (salt<=n/4)break;
}
int x=ask();
// cout<<"$$ "<<x<<'\n';
rep(t,1,n-1)if (w[p[t]][p[t+1]]>0.9999)--x;
if (!x){
rep(t,1,n-1)if (w[p[t]][p[t+1]]<=0.9999)w[p[t]][p[t+1]]=w[p[t+1]][p[t]]=-1e9;
// rep(i,1,n)rep(j,1,n)cout<<w[i][j]<<" \n"[j==n];
continue;
}
vector<pair<int,int>>V;
rep(t,1,n-1)if (w[p[t]][p[t+1]]>0&&w[p[t]][p[t+1]]<=0.9999)V.push_back({p[t],p[t+1]});
if (x==(int)V.size()){
for (auto [x,y]:V)w[x][y]=w[y][x]=1;
V.clear();
}
// if (V.size()==1)cout<<w[V[0].first][V[0].second]<<' '<<x<<'\n';
adj(V,x);
// if (V.size()==1)cout<<w[V[0].first][V[0].second]<<'\n';
// if (x==-1){
// rep(i,1,n)cout<<p[i]<<' ';
// cout<<'\n';
// rep(i,1,n-1)if (w[p[i]][p[i+1]]>0.9999)cout<<p[i]<<' '<<p[i+1]<<' '<<w[p[i]][p[i+1]]<<'\n';
// }
// rep(i,1,n)rep(j,1,n)cout<<w[i][j]<<" \n"[j==n];
}
int pos=0;
long double mx=0;
rep(i,1,n){
iota(id[i]+1,id[i]+n+1,1);
sort(id[i]+1,id[i]+n+1,[&](int x,int y){
return w[i][x]>w[i][y];
});
}
rep(i,1,n){
memset(vis,0,sizeof(vis));
res.clear();
dfs(i);
long double val=1;
rep(i,0,n-2)val=min(val,w[res[i]][res[i+1]]);
if (mx<val)mx=val,pos=i;
}
memset(vis,0,sizeof(vis));
res.clear();
dfs(pos);
return res;
}
}
std::vector<int> solve(int n){return local::solve(n);}
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 10
Accepted
Test #1:
score: 10
Accepted
time: 15ms
memory: 5900kb
input:
1 3 3 1 2
output:
11000 521245195 7113
result:
points 1.0
Test #2:
score: 10
Accepted
time: 81ms
memory: 6296kb
input:
1 30 6 28 10 9 13 4 7 1 21 15 20 27 19 5 17 2 22 12 29 23 14 30 18 3 11 24 26 16 8 25
output:
11000 521245195 537621159
result:
points 1.0
Test #3:
score: 10
Accepted
time: 72ms
memory: 5988kb
input:
1 27 24 17 15 3 13 9 6 16 14 22 7 19 25 12 1 26 23 27 10 21 8 5 18 11 20 4 2
output:
11000 521245195 966160455
result:
points 1.0
Test #4:
score: 10
Accepted
time: 75ms
memory: 6056kb
input:
1 29 24 8 7 14 19 20 4 6 1 12 18 2 10 3 23 13 26 11 22 27 9 17 16 5 21 29 25 15 28
output:
11000 521245195 646167394
result:
points 1.0
Test #5:
score: 10
Accepted
time: 76ms
memory: 6324kb
input:
1 30 9 22 10 27 8 5 23 21 2 25 6 13 30 19 17 20 4 14 29 28 24 15 11 7 12 18 26 16 3 1
output:
11000 521245195 904341262
result:
points 1.0
Test #6:
score: 10
Accepted
time: 76ms
memory: 6052kb
input:
1 27 8 6 11 20 24 7 9 25 13 19 2 3 23 15 16 4 22 21 10 18 12 27 14 5 1 17 26
output:
11000 521245195 173992498
result:
points 1.0
Test #7:
score: 10
Accepted
time: 72ms
memory: 6040kb
input:
1 27 2 5 25 13 11 12 23 24 6 18 19 21 15 17 7 10 16 20 22 27 3 4 8 14 26 1 9
output:
11000 521245195 772894146
result:
points 1.0
Test #8:
score: 10
Accepted
time: 69ms
memory: 6336kb
input:
1 27 13 11 10 27 20 23 3 25 12 24 6 2 19 9 7 17 1 5 8 26 14 16 21 15 22 4 18
output:
11000 521245195 181323461
result:
points 1.0
Test #9:
score: 10
Accepted
time: 73ms
memory: 6044kb
input:
1 27 3 15 12 14 18 27 23 6 20 26 21 5 13 19 10 9 11 17 16 4 25 7 24 2 22 1 8
output:
11000 521245195 480249695
result:
points 1.0
Test #10:
score: 10
Accepted
time: 77ms
memory: 6368kb
input:
1 29 23 7 4 10 9 16 1 14 3 17 13 19 15 8 5 22 24 29 11 12 18 25 21 2 28 26 27 20 6
output:
11000 521245195 31142540
result:
points 1.0
Subtask #2:
score: 0
Wrong Answer
Test #11:
score: 90
Accepted
time: 71ms
memory: 6044kb
input:
1 27 17 16 3 20 27 5 2 13 24 21 25 23 19 9 7 4 22 12 26 15 14 11 1 18 6 10 8
output:
11000 521245195 558749364
result:
points 1.0
Test #12:
score: 90
Accepted
time: 78ms
memory: 8068kb
input:
1 29 19 13 20 22 26 1 23 24 3 14 8 25 29 17 10 9 15 11 18 4 2 28 21 7 6 12 16 27 5
output:
11000 521245195 145445666
result:
points 1.0
Test #13:
score: 90
Accepted
time: 79ms
memory: 6064kb
input:
1 28 16 7 19 9 23 12 20 26 4 10 15 8 21 5 1 22 27 2 18 24 28 6 3 14 13 17 25 11
output:
11000 521245195 877668399
result:
points 1.0
Test #14:
score: 90
Accepted
time: 81ms
memory: 6324kb
input:
1 30 13 4 29 25 16 14 6 15 19 28 7 20 3 23 12 17 8 22 1 24 9 30 21 18 2 26 27 10 11 5
output:
11000 521245195 737974315
result:
points 1.0
Test #15:
score: 90
Accepted
time: 72ms
memory: 4128kb
input:
1 27 18 25 15 20 23 14 4 16 27 6 2 12 21 19 17 26 9 8 10 11 3 7 13 22 24 5 1
output:
11000 521245195 590934171
result:
points 1.0
Test #16:
score: 0
Wrong Answer
time: 1432ms
memory: 10064kb
input:
2 494 364 164 445 359 288 412 15 377 91 481 14 3 357 358 269 136 336 106 392 200 50 388 33 338 114 11 266 186 170 239 494 196 395 68 36 423 378 218 342 275 67 240 120 86 134 356 190 323 123 339 187 30 270 430 292 121 372 404 94 143 454 309 461 344 141 480 474 248 199 42 150 260 369 483 493 124 396 4...
output:
0 0 0
result:
FAIL WA