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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 |
---|---|---|---|---|---|---|---|---|---|
#798026 | #8363. interactive | L_Wave | 10 | 85ms | 9812kb | C++20 | 4.0kb | 2024-12-03 23:20:50 | 2024-12-03 23:20:50 |
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();
int t;
if (val>=0.8)t=5;
else t=10;
for (auto [x,y]:V)w[x][y]=w[y][x]=(w[x][y]*t+val)/(t+1);
}
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){
shuffle(p+1,p+n+1,rng);
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);}
详细
Subtask #1:
score: 10
Accepted
Test #1:
score: 10
Accepted
time: 0ms
memory: 5904kb
input:
1 3 3 1 2
output:
11000 521245195 7113
result:
points 1.0
Test #2:
score: 10
Accepted
time: 6ms
memory: 6000kb
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: 6ms
memory: 8216kb
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: 3ms
memory: 6116kb
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: 6ms
memory: 6300kb
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: 6ms
memory: 6124kb
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: 3ms
memory: 6044kb
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: 6ms
memory: 6008kb
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: 6ms
memory: 6060kb
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: 6ms
memory: 4036kb
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: 6ms
memory: 6248kb
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: 6ms
memory: 6352kb
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: 6ms
memory: 6232kb
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: 7ms
memory: 7980kb
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: 3ms
memory: 5996kb
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: 85ms
memory: 9812kb
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