oj.uz

Submission #139370

# Submission time Handle Problem Language Result Execution time Memory
139370 2019-07-31T15:23:46 Z atoiz Combo (IOI18_combo) C++14
100 / 100
 57 ms 2124 KB 
#include "combo.h"
#include <vector>
#include <algorithm>
#include <cstdio>
#include <iostream>

using namespace std;

vector<char> ch = {'A', 'B', 'X', 'Y'};

char firstChar()
{
	int coins;

    coins = press(string(1, ch[0]) + string(1, ch[1]));
    if (coins == 2) return ch[0];
    else if (coins == 1) {
        coins = press(string(1, ch[0]));
        if (coins == 1) return ch[0];
        else {
            swap(ch[0], ch[1]);
            return ch[0];
        }
    } else {
        coins = press(string(1, ch[2]));
        if (coins == 1) {
            swap(ch[0], ch[2]);
            return ch[0];
        }
        else {
            swap(ch[0], ch[3]);
            return ch[0];
        }
    }
}

char lastChar(string S)
{
	int coins;
    coins = press(S + string(1, ch[0]) + S + string(1, ch[1]));
    if (coins == S.size() + 1) {
        coins = press(S + string(1, ch[0]));
        if (coins == S.size() + 1) return ch[0];
        else return ch[1];
    } else {
        coins = press(S + string(1, ch[2]));
        if (coins == S.size() + 1) return ch[2];
        else return ch[3];
    }
}

string guess_sequence(int N) {
    string S = string(1, firstChar());
    if (N == 1) return S;
	int coins;

	vector<string> str(4);
    for (int i = 0; i < 4; ++i) str[i] = string(1, ch[i]);

    for (int i = 2; i < N; ++i) {
//		cerr << S << ": " << S + str[1] + str[1] + S + str[1] + str[2] + S + str[1] + str[3] + S + str[2];
		coins = press(S + str[1] + str[1] + S + str[1] + str[2] + S + str[1] + str[3] + S + str[2]);
//        cerr << " " << coins << endl;
        if (coins == S.size() + 2) {
            S += str[1];
        } else if (coins == S.size() + 1) {
			S += str[2];
        } else {
			S += str[3];
        }
    }

    S += string(1, lastChar(S));
    return S;
}

Compilation message

combo.cpp: In function 'char lastChar(std::string)':
combo.cpp:41:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     if (coins == S.size() + 1) {
      |         ~~~~~~^~~~~~~~~~~~~~~
combo.cpp:43:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |         if (coins == S.size() + 1) return ch[0];
      |             ~~~~~~^~~~~~~~~~~~~~~
combo.cpp:47:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         if (coins == S.size() + 1) return ch[2];
      |             ~~~~~~^~~~~~~~~~~~~~~
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:64:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |         if (coins == S.size() + 2) {
      |             ~~~~~~^~~~~~~~~~~~~~~
combo.cpp:66:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |         } else if (coins == S.size() + 1) {
      |                    ~~~~~~^~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 2 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 2 ms 200 KB Output is correct
7 Correct 2 ms 216 KB Output is correct
8 Correct 1 ms 216 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 2 ms 200 KB Output is correct
11 Correct 2 ms 200 KB Output is correct
12 Correct 2 ms 200 KB Output is correct
13 Correct 2 ms 216 KB Output is correct
14 Correct 1 ms 208 KB Output is correct
15 Correct 2 ms 208 KB Output is correct
16 Correct 2 ms 208 KB Output is correct
17 Correct 1 ms 200 KB Output is correct
18 Correct 1 ms 200 KB Output is correct
19 Correct 2 ms 208 KB Output is correct
20 Correct 1 ms 208 KB Output is correct
21 Correct 2 ms 216 KB Output is correct
22 Correct 1 ms 216 KB Output is correct
23 Correct 1 ms 216 KB Output is correct
24 Correct 1 ms 252 KB Output is correct
25 Correct 2 ms 216 KB Output is correct
26 Correct 2 ms 216 KB Output is correct
27 Correct 2 ms 212 KB Output is correct
28 Correct 1 ms 216 KB Output is correct
29 Correct 2 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 2 ms 216 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 2 ms 216 KB Output is correct
34 Correct 1 ms 216 KB Output is correct
35 Correct 2 ms 216 KB Output is correct
36 Correct 1 ms 212 KB Output is correct

Subtask #2
95.0 / 95.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 216 KB Output is correct
2 Correct 1 ms 216 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 288 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 216 KB Output is correct
8 Correct 1 ms 216 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 2 ms 212 KB Output is correct
11 Correct 1 ms 216 KB Output is correct
12 Correct 1 ms 216 KB Output is correct
13 Correct 2 ms 268 KB Output is correct
14 Correct 1 ms 216 KB Output is correct
15 Correct 1 ms 216 KB Output is correct
16 Correct 2 ms 216 KB Output is correct
17 Correct 24 ms 352 KB Output is correct
18 Correct 31 ms 344 KB Output is correct
19 Correct 36 ms 340 KB Output is correct
20 Correct 25 ms 440 KB Output is correct
21 Correct 39 ms 364 KB Output is correct
22 Correct 2 ms 204 KB Output is correct
23 Correct 2 ms 300 KB Output is correct
24 Correct 3 ms 300 KB Output is correct
25 Correct 2 ms 200 KB Output is correct
26 Correct 2 ms 296 KB Output is correct
27 Correct 2 ms 328 KB Output is correct
28 Correct 3 ms 200 KB Output is correct
29 Correct 4 ms 364 KB Output is correct
30 Correct 4 ms 200 KB Output is correct
31 Correct 5 ms 200 KB Output is correct
32 Correct 31 ms 340 KB Output is correct
33 Correct 24 ms 340 KB Output is correct
34 Correct 57 ms 368 KB Output is correct
35 Correct 49 ms 424 KB Output is correct
36 Correct 37 ms 348 KB Output is correct
37 Correct 45 ms 344 KB Output is correct
38 Correct 36 ms 380 KB Output is correct
39 Correct 48 ms 352 KB Output is correct
40 Correct 34 ms 352 KB Output is correct
41 Correct 27 ms 348 KB Output is correct
42 Correct 45 ms 336 KB Output is correct
43 Correct 29 ms 352 KB Output is correct
44 Correct 38 ms 428 KB Output is correct
45 Correct 39 ms 552 KB Output is correct
46 Correct 33 ms 516 KB Output is correct
47 Correct 44 ms 476 KB Output is correct
48 Correct 51 ms 352 KB Output is correct
49 Correct 38 ms 456 KB Output is correct
50 Correct 45 ms 404 KB Output is correct
51 Correct 20 ms 340 KB Output is correct
52 Correct 36 ms 388 KB Output is correct
53 Correct 46 ms 432 KB Output is correct
54 Correct 31 ms 480 KB Output is correct
55 Correct 34 ms 396 KB Output is correct
56 Correct 41 ms 416 KB Output is correct
57 Correct 43 ms 476 KB Output is correct
58 Correct 47 ms 456 KB Output is correct
59 Correct 42 ms 436 KB Output is correct
60 Correct 27 ms 348 KB Output is correct
61 Correct 34 ms 448 KB Output is correct
62 Correct 31 ms 344 KB Output is correct
63 Correct 31 ms 344 KB Output is correct
64 Correct 54 ms 344 KB Output is correct
65 Correct 33 ms 388 KB Output is correct
66 Correct 57 ms 436 KB Output is correct
67 Correct 36 ms 472 KB Output is correct
68 Correct 25 ms 356 KB Output is correct
69 Correct 56 ms 2124 KB Output is correct
70 Correct 31 ms 348 KB Output is correct
71 Correct 50 ms 664 KB Output is correct
72 Correct 33 ms 2020 KB Output is correct
73 Correct 28 ms 352 KB Output is correct
74 Correct 32 ms 356 KB Output is correct
75 Correct 45 ms 456 KB Output is correct
76 Correct 25 ms 2012 KB Output is correct
77 Correct 25 ms 368 KB Output is correct
78 Correct 2 ms 360 KB Output is correct
79 Correct 2 ms 276 KB Output is correct
80 Correct 2 ms 216 KB Output is correct
81 Correct 2 ms 216 KB Output is correct
82 Correct 2 ms 528 KB Output is correct
83 Correct 3 ms 1368 KB Output is correct
84 Correct 2 ms 308 KB Output is correct
85 Correct 2 ms 304 KB Output is correct
86 Correct 2 ms 348 KB Output is correct
87 Correct 2 ms 308 KB Output is correct
88 Correct 1 ms 212 KB Output is correct
89 Correct 2 ms 212 KB Output is correct
90 Correct 2 ms 344 KB Output is correct
91 Correct 2 ms 360 KB Output is correct
92 Correct 2 ms 216 KB Output is correct
93 Correct 2 ms 360 KB Output is correct
94 Correct 2 ms 616 KB Output is correct
95 Correct 3 ms 484 KB Output is correct
96 Correct 3 ms 296 KB Output is correct
97 Correct 3 ms 304 KB Output is correct
98 Correct 3 ms 216 KB Output is correct
99 Correct 2 ms 212 KB Output is correct
100 Correct 2 ms 212 KB Output is correct
101 Correct 2 ms 312 KB Output is correct
102 Correct 3 ms 296 KB Output is correct
103 Correct 2 ms 216 KB Output is correct
104 Correct 2 ms 212 KB Output is correct
105 Correct 3 ms 304 KB Output is correct
106 Correct 2 ms 216 KB Output is correct
107 Correct 3 ms 216 KB Output is correct
108 Correct 2 ms 312 KB Output is correct
109 Correct 2 ms 216 KB Output is correct
110 Correct 2 ms 360 KB Output is correct
111 Correct 2 ms 216 KB Output is correct
112 Correct 3 ms 1924 KB Output is correct
113 Correct 2 ms 212 KB Output is correct
114 Correct 3 ms 1968 KB Output is correct
115 Correct 2 ms 212 KB Output is correct
116 Correct 2 ms 216 KB Output is correct
117 Correct 37 ms 1132 KB Output is correct
118 Correct 46 ms 1552 KB Output is correct
119 Correct 3 ms 344 KB Output is correct
120 Correct 2 ms 220 KB Output is correct
121 Correct 2 ms 216 KB Output is correct
122 Correct 3 ms 368 KB Output is correct
123 Correct 3 ms 220 KB Output is correct