oj.uz

Submission #1053322

# Submission time Handle Problem Language Result Execution time Memory
1053322 2024-08-11T10:28:36 Z Unforgettablepl The Big Prize (IOI17_prize) C++17
20 / 100
 43 ms 432 KB 
#include "prize.h"
#include <bits/stdc++.h>
using namespace std;

const int THRESHOLD_JUMP = 480;
const int BIGGER_JUMP = 131072;

int find_best(int n){
    int moves = 0;
    int worst_case = 0;
    for(int i=0;i<480;i++) {
        auto curr = ask(i);
        int c = curr[0]+curr[1];
        if(c==0)return i;
        worst_case = max(worst_case,c);
    }
    for(int i=480;i<n;i++) {
        auto base = ask(i);
        int curr = base[0]+base[1];
        if(curr==0)return i;
        if(curr==worst_case) {
            for(int jump=BIGGER_JUMP;jump;jump/=2) {
                if(i+jump>=n)continue;
                auto temp = ask(i+jump);
                if(temp==base)i+=jump;
            }
        } else {
            int curradded = 0;
            for(int jump=256;jump;jump/=2) {
                if(i+jump>=n)continue;
                if(curradded+jump>THRESHOLD_JUMP)continue;
                auto temp = ask(i+jump);
                if(temp==base){
                    i+=jump;
                    curradded+=jump;
                }
            }
        }
    }
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:9:9: warning: unused variable 'moves' [-Wunused-variable]
    9 |     int moves = 0;
      |         ^~~~~
prize.cpp:40:1: warning: control reaches end of non-void function [-Wreturn-type]
   40 | }
      | ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 3 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 2 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 432 KB Output is correct
10 Correct 2 ms 344 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 2 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 2 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 4 ms 344 KB Output is correct
12 Correct 2 ms 428 KB Output is correct
13 Correct 5 ms 344 KB Output is correct
14 Correct 5 ms 344 KB Output is correct
15 Correct 9 ms 344 KB Output is correct
16 Incorrect 43 ms 344 KB Incorrect
17 Halted 0 ms 0 KB -