QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#798915 | #8363. interactive | L_Wave | 10 | 2420ms | 25848kb | C++20 | 4.4kb | 2024-12-04 18:47:22 | 2024-12-04 18:47:22 |
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{
constexpr int K=8000;
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];
vector<pair<vector<int>,int>>W;
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 ;
}
}
void ask(){
vector<int>Q;
rep(i,1,n)Q.push_back(p[i]);
// rep(i,1,n)cout<<p[i]<<' ';
// cout<<'\n';
int t=query(Q);
W.push_back({Q,t});
// cout<<W.back().first[0]<<'\n';
}
void create(int i,int&x){
x=W[i-1].second;
rep(j,1,n)p[j]=W[i-1].first[j-1];
}
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,K){
shuffle(p+1,p+n+1,rng);
ask();
}
rep(_,1,60){
rep(i,1,K){
int x;
create(i,x);
// cout<<"$$ "<<x<<'\n';
// rep(i,1,n)cout<<p[i]<<' ';
// cout<<'\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]]>=0.0001&&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: 11ms
memory: 6148kb
input:
1 3 3 1 2
output:
8000 775765009 7113
result:
points 1.0
Test #2:
score: 10
Accepted
time: 122ms
memory: 7080kb
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:
8000 775765009 537621159
result:
points 1.0
Test #3:
score: 10
Accepted
time: 114ms
memory: 7048kb
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:
8000 775765009 966160455
result:
points 1.0
Test #4:
score: 10
Accepted
time: 122ms
memory: 5084kb
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:
8000 775765009 646167394
result:
points 1.0
Test #5:
score: 10
Accepted
time: 126ms
memory: 5116kb
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:
8000 775765009 904341262
result:
points 1.0
Test #6:
score: 10
Accepted
time: 109ms
memory: 6964kb
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:
8000 775765009 173992498
result:
points 1.0
Test #7:
score: 10
Accepted
time: 113ms
memory: 7076kb
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:
8000 775765009 772894146
result:
points 1.0
Test #8:
score: 10
Accepted
time: 114ms
memory: 7340kb
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:
8000 775765009 181323461
result:
points 1.0
Test #9:
score: 10
Accepted
time: 114ms
memory: 7348kb
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:
8000 775765009 480249695
result:
points 1.0
Test #10:
score: 10
Accepted
time: 122ms
memory: 7060kb
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:
8000 775765009 31142540
result:
points 1.0
Subtask #2:
score: 0
Wrong Answer
Test #11:
score: 90
Accepted
time: 114ms
memory: 9072kb
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:
8000 775765009 558749364
result:
points 1.0
Test #12:
score: 90
Accepted
time: 122ms
memory: 7124kb
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:
8000 775765009 145445666
result:
points 1.0
Test #13:
score: 90
Accepted
time: 118ms
memory: 7132kb
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:
8000 775765009 877668399
result:
points 1.0
Test #14:
score: 90
Accepted
time: 126ms
memory: 6920kb
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:
8000 775765009 737974315
result:
points 1.0
Test #15:
score: 90
Accepted
time: 114ms
memory: 7084kb
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:
8000 775765009 590934171
result:
points 1.0
Test #16:
score: 90
Accepted
time: 2379ms
memory: 25320kb
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:
8000 775765009 998930322
result:
points 1.0
Test #17:
score: 90
Accepted
time: 2419ms
memory: 25556kb
input:
2 500 468 70 339 65 443 143 75 123 220 163 390 484 489 139 392 147 183 132 202 14 19 380 310 259 179 482 85 36 232 419 285 378 137 274 376 23 321 263 217 485 387 466 94 104 164 57 185 359 42 211 40 206 418 184 458 173 441 291 11 366 428 384 223 190 374 34 275 210 171 226 408 168 88 494 204 66 481 10...
output:
8000 775765009 110390244
result:
points 1.0
Test #18:
score: 90
Accepted
time: 2419ms
memory: 25540kb
input:
2 500 217 120 312 323 22 113 331 295 315 66 434 181 381 421 154 253 226 100 152 490 389 261 244 249 165 500 4 426 23 487 356 466 364 436 2 374 486 494 420 14 344 34 26 475 279 96 457 493 185 147 227 41 180 61 472 102 76 131 141 164 324 204 403 298 283 284 19 132 258 355 499 183 108 483 348 172 134 2...
output:
8000 775765009 177306504
result:
points 1.0
Test #19:
score: 90
Accepted
time: 2402ms
memory: 25524kb
input:
2 496 483 115 328 488 147 188 287 16 251 1 30 170 224 187 15 156 61 366 232 472 474 92 10 457 228 28 109 261 229 480 7 84 180 65 313 239 380 359 464 339 471 484 356 485 435 352 220 454 430 113 39 494 311 149 396 81 346 226 145 345 354 402 298 433 99 208 289 424 79 97 300 93 186 425 470 383 183 165 2...
output:
8000 775765009 595257989
result:
points 1.0
Test #20:
score: 90
Accepted
time: 2405ms
memory: 25464kb
input:
2 498 275 455 229 213 132 452 185 346 279 90 113 30 162 148 69 1 154 11 310 66 435 153 86 52 467 477 201 12 121 238 84 67 5 436 401 496 340 6 463 411 343 360 88 473 57 396 14 106 144 22 98 472 422 149 25 168 59 363 165 323 112 317 127 383 46 68 212 138 389 330 4 361 200 203 492 50 263 355 242 33 267...
output:
8000 775765009 79267961
result:
points 1.0
Test #21:
score: 90
Accepted
time: 2420ms
memory: 25848kb
input:
2 499 218 441 27 245 323 157 414 380 126 423 444 273 440 438 226 292 418 115 81 420 412 342 263 446 219 114 108 38 253 146 54 496 150 450 103 147 44 19 353 80 310 70 384 91 13 413 386 161 396 61 349 409 221 367 96 322 227 433 201 231 175 64 290 402 495 373 233 211 94 162 31 95 176 330 289 295 52 102...
output:
8000 775765009 791732988
result:
points 1.0
Test #22:
score: 90
Accepted
time: 2380ms
memory: 25396kb
input:
2 494 154 75 65 20 92 153 39 236 177 41 482 47 298 426 124 228 494 381 473 364 128 109 340 57 432 480 144 43 184 392 286 359 291 423 469 260 468 355 146 231 28 235 62 188 134 138 305 87 175 362 95 58 116 250 464 297 254 407 212 32 160 316 453 396 18 243 338 272 252 454 199 422 249 418 450 185 356 39...
output:
8000 775765009 192551329
result:
points 1.0
Test #23:
score: 0
Wrong Answer
time: 1613ms
memory: 25240kb
input:
2 493 118 473 190 268 244 72 211 196 153 261 12 76 245 365 371 162 302 352 112 272 273 425 340 354 234 220 45 65 231 321 290 285 383 389 83 133 248 260 376 326 214 33 478 323 3 373 334 437 212 457 337 47 81 113 339 379 173 421 223 253 48 314 312 55 408 363 258 42 160 289 82 239 472 359 415 465 80 35...
output:
0 0 0
result:
FAIL WA