Submission #1112999

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1112999	2024-11-15T11:13:16 Z	SalihSahin	The Big Prize (IOI17_prize)	C++14	90 / 100	139 ms	12368 KB

prize

#include <bits/stdc++.h>
#define pb push_back
#include "prize.h"

using namespace std;
/*
static const int max_q = 10000;
static int n;
static int query_count = 0;
static vector<int> g;
static vector<vector<int> > rank_count;

vector<int> ask(int i) {
   query_count++;
   if(query_count > max_q) {
      cerr << "Query limit exceeded" << endl;
      //cout<<query_count<<" babag "<<endl;
      exit(0);
   }

   if(i < 0 || i >= n) {
      cerr << "Bad index: " << i << endl;
      exit(0);
   }

   vector<int> res(2);
   res[0] = rank_count[g[i] - 1][i + 1];
   res[1] = rank_count[g[i] - 1][n] - res[0];
   return res;
}
*/

const int MAXN = 2e5 + 5;
vector<vector<int> > check(MAXN, vector<int>(2, -1));
vector<int> small(MAXN);

void f(int n, int smallcnt, int l, int r, int cnt){
   if(l == r){
      small[l] = 1;
      return;
   }
   int mid = (l + r)/2;
   int m = -1;

   for(int delt = 0; delt <= (r - l + 1)/2 + 1; delt++){
      if(mid + delt <= r){
         if(check[mid + delt][0] == -1) check[mid + delt] = ask(mid + delt);
         if(check[mid + delt][0] + check[mid + delt][1] == smallcnt){
            m = mid + delt;
            break;
         }
         else{
            small[mid + delt] = 1;
         }
      }

      if(mid - delt >= l){
         if(check[mid - delt][0] == -1) check[mid - delt] = ask(mid - delt);
         if(check[mid - delt][0] + check[mid - delt][1] == smallcnt){
            m = mid - delt;
            break;
         }
         else{
            small[mid - delt] = 1;
         }
      }
   }

   if(m == -1) return; // aralıktaki herkes small ve tagledik
   if(l > 0 && check[l-1][0] == -1) check[l-1] = ask(l-1);
   if(r < n-1 && check[r+1][0] == -1) check[r+1] = ask(r+1);

   int solcnt = check[m][0] - (l > 0 ? check[l-1][0] : 0);
   int sagcnt = check[m][1] - (r < n-1 ? check[r+1][1] : 0);
   if(l <= m-1 && solcnt > 0){
      f(n, smallcnt, l, m-1, solcnt);
   }

   if(m+1 <= r && sagcnt > 0){
      f(n, smallcnt, m+1, r, sagcnt);
   }
}

int find_best(int n) {
   mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
   int smallcnt = 0;
   int dene = 150;

   while(dene--){
      int i = rng() % n;
      if(check[i][0] == -1) check[i] = ask(i);
      smallcnt = max(smallcnt, check[i][0] + check[i][1]);
   }

   f(n, smallcnt, 0, n-1, smallcnt);
   int ans = -1;
   for(int i = 0; i < n; i++){
      if(small[i] == 1){
         if(check[i][0] == -1) check[i] = ask(i);
         if(check[i][0] + check[i][1] == 0){
            ans = i;
            break;
         }
      }
   }
   return ans;
}
/*
int main() {
   cin>>n;
   g.resize(n);

   for(int i = 0; i < n; i++) {
      cin>>g[i];
      if(g[i] < 1) {
         cerr << "Invalid rank " << g[i] << " at index " << i << endl;
         exit(0);
      }
   }

   int max_rank = *max_element(g.begin(), g.end());

   rank_count.resize(max_rank + 1, vector<int>(n + 1, 0));
   for(int r = 0; r <= max_rank; r++) {
      for(int i = 1; i <= n; i++) {
         rank_count[r][i] = rank_count[r][i - 1];
         if(g[i - 1] == r)
           rank_count[r][i]++;
      }
   }

   for(int i = 0; i <= n; i++)
      for(int r = 1; r <= max_rank; r++)
         rank_count[r][i] += rank_count[r - 1][i];

   int res = find_best(n);
   cout << res << endl << "Query count: " << query_count << endl;
   return 0;
}*/

/*
int main() {
   mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
   int mx = 0;
   int t;
   cin>>t;
   while(t--){
      //cin>>n;
      //n = rng() % 55 + 7;
      n = 2e5 - rng() % 5000;
      g.resize(n);

      vector<int> cnts(3);
      cnts[0] = 1;
      cnts[1] = 3;
      cnts[2] = rng()%10 + 10;
      cnts[3] = rng()%20 + 400;
      cnts[4] = n - cnts[3] - cnts[2] - cnts[1] - cnts[0];

      for(int i = 0; i < n; i++){
         small[i] = 0;
         check[i][0] = check[i][1] = -1;
      }
      int ind = 0;
      for(int i = 0; i < n; i++){
         if(cnts[ind] == 0) ind++;
         g[i] = ind + 1;
         cnts[ind]--;
      }

      shuffle(g.begin(), g.end(), rng);

      for(int i = 0; i < n; i++) {
         if(g[i] < 1) {
            cerr << "Invalid rank " << g[i] << " at index " << i << endl;
            exit(0);
         }
      }

      int max_rank = *max_element(g.begin(), g.end());

      rank_count.clear();
      rank_count.resize(max_rank + 1, vector<int>(n + 1, 0));
      for(int r = 0; r <= max_rank; r++) {
         for(int i = 1; i <= n; i++) {
            rank_count[r][i] = rank_count[r][i - 1];
            if(g[i - 1] == r)
              rank_count[r][i]++;
         }
      }

      for(int i = 0; i <= n; i++)
         for(int r = 1; r <= max_rank; r++)
            rank_count[r][i] += rank_count[r - 1][i];

      int res = find_best(n);
      if(res == -1 || query_count > max_q){
         cout << res << endl << "Query count: " << query_count << endl;
      }
      mx = max(mx, query_count);
      query_count = 0;
   }
   cout<<mx<<endl;
   return 0;
}*/

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	14 ms	12368 KB	Output is correct
2	Correct	14 ms	12112 KB	Output is correct
3	Correct	14 ms	12112 KB	Output is correct
4	Correct	16 ms	12172 KB	Output is correct
5	Correct	16 ms	12112 KB	Output is correct
6	Correct	17 ms	12192 KB	Output is correct
7	Correct	22 ms	12368 KB	Output is correct
8	Correct	15 ms	12112 KB	Output is correct
9	Correct	15 ms	12112 KB	Output is correct
10	Correct	14 ms	12112 KB	Output is correct

Subtask #2

70.0 / 80.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	21 ms	12112 KB	Output is correct
2	Correct	16 ms	12112 KB	Output is correct
3	Correct	22 ms	12112 KB	Output is correct
4	Correct	14 ms	12112 KB	Output is correct
5	Correct	14 ms	12112 KB	Output is correct
6	Correct	18 ms	12188 KB	Output is correct
7	Correct	18 ms	12152 KB	Output is correct
8	Correct	19 ms	12112 KB	Output is correct
9	Correct	16 ms	12112 KB	Output is correct
10	Correct	16 ms	12112 KB	Output is correct
11	Correct	25 ms	12112 KB	Output is correct
12	Correct	24 ms	12112 KB	Output is correct
13	Correct	22 ms	12112 KB	Output is correct
14	Correct	32 ms	12112 KB	Output is correct
15	Correct	92 ms	12184 KB	Output is correct
16	Correct	103 ms	12184 KB	Output is correct
17	Correct	93 ms	12076 KB	Output is correct
18	Correct	100 ms	12112 KB	Output is correct
19	Correct	107 ms	12108 KB	Output is correct
20	Correct	74 ms	12112 KB	Output is correct
21	Correct	111 ms	12112 KB	Output is correct
22	Correct	80 ms	12112 KB	Output is correct
23	Correct	19 ms	12184 KB	Output is correct
24	Correct	23 ms	12284 KB	Output is correct
25	Correct	88 ms	12112 KB	Output is correct
26	Correct	77 ms	12112 KB	Output is correct
27	Correct	19 ms	12112 KB	Output is correct
28	Correct	81 ms	12112 KB	Output is correct
29	Correct	77 ms	12184 KB	Output is correct
30	Correct	95 ms	12360 KB	Output is correct
31	Correct	94 ms	12280 KB	Output is correct
32	Correct	29 ms	12216 KB	Output is correct
33	Correct	13 ms	12112 KB	Output is correct
34	Correct	87 ms	12112 KB	Output is correct
35	Correct	21 ms	12360 KB	Output is correct
36	Correct	91 ms	12188 KB	Output is correct
37	Correct	23 ms	12164 KB	Output is correct
38	Correct	18 ms	12112 KB	Output is correct
39	Correct	98 ms	12112 KB	Output is correct
40	Correct	101 ms	12360 KB	Output is correct
41	Correct	106 ms	12180 KB	Output is correct
42	Correct	95 ms	12184 KB	Output is correct
43	Correct	95 ms	12180 KB	Output is correct
44	Correct	92 ms	12112 KB	Output is correct
45	Correct	89 ms	12184 KB	Output is correct
46	Correct	89 ms	12112 KB	Output is correct
47	Correct	95 ms	12112 KB	Output is correct
48	Correct	97 ms	12360 KB	Output is correct
49	Correct	92 ms	12112 KB	Output is correct
50	Correct	97 ms	12112 KB	Output is correct
51	Correct	99 ms	12180 KB	Output is correct
52	Correct	96 ms	12112 KB	Output is correct
53	Correct	17 ms	12112 KB	Output is correct
54	Correct	102 ms	12060 KB	Output is correct
55	Correct	89 ms	12112 KB	Output is correct
56	Correct	101 ms	12124 KB	Output is correct
57	Correct	103 ms	12112 KB	Output is correct
58	Correct	101 ms	12112 KB	Output is correct
59	Correct	100 ms	12112 KB	Output is correct
60	Correct	98 ms	12176 KB	Output is correct
61	Correct	19 ms	12112 KB	Output is correct
62	Correct	19 ms	12112 KB	Output is correct
63	Correct	17 ms	12112 KB	Output is correct
64	Correct	20 ms	12112 KB	Output is correct
65	Correct	17 ms	12112 KB	Output is correct
66	Correct	25 ms	12180 KB	Output is correct
67	Correct	24 ms	12112 KB	Output is correct
68	Correct	26 ms	12112 KB	Output is correct
69	Correct	24 ms	12180 KB	Output is correct
70	Correct	21 ms	11944 KB	Output is correct
71	Correct	110 ms	12112 KB	Output is correct
72	Correct	22 ms	12112 KB	Output is correct
73	Correct	94 ms	12112 KB	Output is correct
74	Correct	103 ms	12112 KB	Output is correct
75	Correct	18 ms	12112 KB	Output is correct
76	Correct	99 ms	12184 KB	Output is correct
77	Partially correct	94 ms	12112 KB	Partially correct - number of queries: 5024
78	Correct	23 ms	12112 KB	Output is correct
79	Correct	60 ms	12112 KB	Output is correct
80	Partially correct	105 ms	12180 KB	Partially correct - number of queries: 5023
81	Partially correct	105 ms	12112 KB	Partially correct - number of queries: 5010
82	Correct	107 ms	12112 KB	Output is correct
83	Correct	16 ms	12112 KB	Output is correct
84	Correct	79 ms	12176 KB	Output is correct
85	Partially correct	103 ms	12180 KB	Partially correct - number of queries: 5015
86	Correct	60 ms	12112 KB	Output is correct
87	Correct	18 ms	12188 KB	Output is correct
88	Correct	68 ms	12112 KB	Output is correct
89	Correct	70 ms	12360 KB	Output is correct
90	Correct	14 ms	12112 KB	Output is correct
91	Correct	50 ms	12112 KB	Output is correct
92	Correct	61 ms	12112 KB	Output is correct
93	Correct	30 ms	12328 KB	Output is correct
94	Correct	91 ms	12112 KB	Output is correct
95	Partially correct	139 ms	12112 KB	Partially correct - number of queries: 7339
96	Correct	20 ms	12368 KB	Output is correct
97	Correct	16 ms	12112 KB	Output is correct