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Submission #76694

# Submission time Handle Problem Language Result Execution time Memory
76694 2018-09-15T21:10:01 Z thebes Combo (IOI18_combo) C++14
5 / 100
 2 ms 280 KB 
#include "combo.h"
#include <bits/stdc++.h>
using namespace std;

string s, t, idk;

string guess_sequence(int N){
    if(press("AB")){
        if(press("A")) s = "A", idk="BXY";
        else s = "B", idk="AXY";
    }
    else{
        if(press("X")) s = "X", idk="ABY";
        else s = "Y", idk="ABX";
    }
    for(int i=2;i<N;i++){
        t = s+idk[0]+s+idk[1]+idk[0]+s+idk[1]+idk[1]+s+idk[1]+idk[2];
        assert(t.size() <= 4*N);
        int m = press(t);
        if(m == i-1) s += idk[2];
        else if(m == i) s += idk[0];
        else s += idk[1];
    }
    int a = press(s+idk[0]), b = press(s+idk[1]);
    if(a != N-1) s += idk[0];
    else if(b != N-1) s += idk[1];
    else s += idk[2];
    return s;
}

Compilation message

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from combo.cpp:2:
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:18:25: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   18 |         assert(t.size() <= 4*N);
      |                ~~~~~~~~~^~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Correct 1 ms 220 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 260 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 2 ms 200 KB Output is correct
9 Correct 1 ms 200 KB Output is correct
10 Correct 1 ms 200 KB Output is correct
11 Correct 1 ms 200 KB Output is correct
12 Correct 1 ms 200 KB Output is correct
13 Correct 1 ms 200 KB Output is correct
14 Correct 1 ms 200 KB Output is correct
15 Correct 1 ms 200 KB Output is correct
16 Correct 1 ms 200 KB Output is correct
17 Correct 1 ms 200 KB Output is correct
18 Correct 2 ms 236 KB Output is correct
19 Correct 1 ms 260 KB Output is correct
20 Correct 1 ms 200 KB Output is correct
21 Correct 2 ms 200 KB Output is correct
22 Correct 1 ms 200 KB Output is correct
23 Correct 1 ms 280 KB Output is correct
24 Correct 1 ms 200 KB Output is correct
25 Correct 1 ms 200 KB Output is correct
26 Correct 1 ms 200 KB Output is correct
27 Correct 1 ms 220 KB Output is correct
28 Correct 1 ms 200 KB Output is correct
29 Correct 1 ms 200 KB Output is correct
30 Correct 1 ms 200 KB Output is correct
31 Correct 1 ms 200 KB Output is correct
32 Correct 1 ms 200 KB Output is correct
33 Correct 1 ms 200 KB Output is correct
34 Correct 1 ms 200 KB Output is correct
35 Correct 1 ms 200 KB Output is correct
36 Correct 1 ms 200 KB Output is correct

Subtask #2
0 / 95.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 200 KB Wrong Answer: wrong guess.
2 Halted 0 ms 0 KB -