Submission #76519

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
76519	2018-09-14T11:54:21 Z	darthsidious	Combo (IOI18_combo)	C++14	97 / 100	49 ms	596 KB

combo

#include <iostream>
#include <string>
//A B X Y

using namespace std;

int press(string p);
// {
// 	string secret = "ABXYXXYY";
// 	int ans = 0;
// 	for(int i=0;i<secret.size();i++) {
// 		if(secret[i] == p[i])
// 			ans++;
// 		else
// 			break;
// 	}
// 	return ans;
// }

string guess_sequence(int N) {
	string chars = "ABXY";
	string c[3];
	int start_c = 3;
	
	int x = press("AB");
	// cout << "x = " << x << endl;
	if(x >= 1) {
		if(press("A") == 1)
			start_c = 0;
		else
			start_c = 1;
	}
	else {
		if(press("X") == 1)
			start_c = 2;
	}

	// for(int i=0;i<3;i++) {
	// 	string tmp(1, chars[i]);
	// 	int r = press(tmp);	
	// 	if(r == 1) {
	// 		start_c = i;
	// 		break;
	// 	}
	// }

	for(int i=0;i<3;i++) {
		if(start_c <= i)
			c[i] = string(1, chars[i+1]);
		else
			c[i] = string(1, chars[i]);
	}
	// cout << c[0] << c[1] << c[2] << endl;	

	string ans(1, chars[start_c]);
	// cout << "Starting with " << ans << endl;
	for(int i=0;i<7996;i++) {

		int correct = ans.size();
		if(correct == N)
			break;

		if(correct == N -1) {
			int r;
			for(int k=0;k<3;k++) {
				r = press(ans + c[k]);
				if(r == N)
					return ans + c[k];
			}
			return ans;
		}

		string test = ans + c[0] + ans + c[1] + c[0] + ans + c[1] + c[1] + ans + c[1] + c[2];
		if(test.size() > 4*N)
			cout << "wtf";
		int res = press(test);
		// cout << "Result: " << res << " test: " << test << " correct: " << correct << endl;

		if(res == correct)
			ans += c[2];
		else if(res == correct + 1)
			ans += c[0];
		else if(res == correct + 2)
			ans += c[1];
		// cout << "testing " << test << endl;


		if((int)ans.size() == N)
			break;
	}

	return ans;
}

// int main() {
// 	cout << guess_sequence(8) << endl;
// }

Compilation message

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:74:18: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   74 |   if(test.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	200 KB	Output is correct
5	Correct	2 ms	200 KB	Output is correct
6	Correct	1 ms	200 KB	Output is correct
7	Correct	2 ms	200 KB	Output is correct
8	Correct	2 ms	200 KB	Output is correct
9	Correct	2 ms	200 KB	Output is correct
10	Correct	1 ms	200 KB	Output is correct
11	Correct	2 ms	200 KB	Output is correct
12	Correct	1 ms	200 KB	Output is correct
13	Correct	2 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	2 ms	200 KB	Output is correct
17	Correct	2 ms	200 KB	Output is correct
18	Correct	1 ms	200 KB	Output is correct
19	Correct	1 ms	200 KB	Output is correct
20	Correct	2 ms	200 KB	Output is correct
21	Correct	1 ms	200 KB	Output is correct
22	Correct	1 ms	200 KB	Output is correct
23	Correct	1 ms	200 KB	Output is correct
24	Correct	1 ms	200 KB	Output is correct
25	Correct	1 ms	200 KB	Output is correct
26	Correct	2 ms	200 KB	Output is correct
27	Correct	4 ms	200 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

92.0 / 95.0

#	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	256 KB	Output is correct
4	Correct	1 ms	200 KB	Output is correct
5	Correct	1 ms	200 KB	Output is correct
6	Correct	1 ms	200 KB	Output is correct
7	Partially correct	1 ms	200 KB	Output is partially correct
8	Correct	1 ms	200 KB	Output is correct
9	Correct	1 ms	200 KB	Output is correct
10	Partially correct	1 ms	200 KB	Output is partially correct
11	Correct	1 ms	200 KB	Output is correct
12	Correct	1 ms	200 KB	Output is correct
13	Partially correct	1 ms	200 KB	Output is partially correct
14	Correct	1 ms	200 KB	Output is correct
15	Correct	1 ms	200 KB	Output is correct
16	Partially correct	1 ms	200 KB	Output is partially correct
17	Correct	35 ms	368 KB	Output is correct
18	Correct	34 ms	520 KB	Output is correct
19	Correct	34 ms	348 KB	Output is correct
20	Partially correct	36 ms	340 KB	Output is partially correct
21	Correct	21 ms	340 KB	Output is correct
22	Correct	1 ms	200 KB	Output is correct
23	Partially correct	2 ms	200 KB	Output is partially correct
24	Correct	2 ms	200 KB	Output is correct
25	Correct	1 ms	200 KB	Output is correct
26	Correct	2 ms	200 KB	Output is correct
27	Correct	2 ms	200 KB	Output is correct
28	Correct	4 ms	288 KB	Output is correct
29	Partially correct	3 ms	200 KB	Output is partially correct
30	Partially correct	4 ms	200 KB	Output is partially correct
31	Correct	2 ms	200 KB	Output is correct
32	Correct	40 ms	348 KB	Output is correct
33	Partially correct	42 ms	396 KB	Output is partially correct
34	Correct	36 ms	476 KB	Output is correct
35	Correct	29 ms	432 KB	Output is correct
36	Partially correct	17 ms	428 KB	Output is partially correct
37	Correct	35 ms	452 KB	Output is correct
38	Correct	27 ms	408 KB	Output is correct
39	Correct	29 ms	400 KB	Output is correct
40	Correct	26 ms	496 KB	Output is correct
41	Partially correct	41 ms	348 KB	Output is partially correct
42	Partially correct	33 ms	348 KB	Output is partially correct
43	Correct	18 ms	408 KB	Output is correct
44	Correct	20 ms	340 KB	Output is correct
45	Correct	39 ms	348 KB	Output is correct
46	Correct	34 ms	388 KB	Output is correct
47	Partially correct	29 ms	344 KB	Output is partially correct
48	Correct	18 ms	344 KB	Output is correct
49	Correct	37 ms	344 KB	Output is correct
50	Correct	33 ms	340 KB	Output is correct
51	Correct	40 ms	472 KB	Output is correct
52	Partially correct	22 ms	344 KB	Output is partially correct
53	Correct	40 ms	452 KB	Output is correct
54	Correct	37 ms	384 KB	Output is correct
55	Correct	35 ms	452 KB	Output is correct
56	Correct	36 ms	348 KB	Output is correct
57	Correct	31 ms	444 KB	Output is correct
58	Correct	35 ms	380 KB	Output is correct
59	Correct	42 ms	372 KB	Output is correct
60	Correct	31 ms	340 KB	Output is correct
61	Correct	38 ms	448 KB	Output is correct
62	Partially correct	40 ms	596 KB	Output is partially correct
63	Partially correct	46 ms	436 KB	Output is partially correct
64	Partially correct	30 ms	444 KB	Output is partially correct
65	Partially correct	39 ms	344 KB	Output is partially correct
66	Partially correct	41 ms	344 KB	Output is partially correct
67	Correct	42 ms	344 KB	Output is correct
68	Partially correct	40 ms	344 KB	Output is partially correct
69	Correct	49 ms	348 KB	Output is correct
70	Partially correct	22 ms	344 KB	Output is partially correct
71	Partially correct	25 ms	344 KB	Output is partially correct
72	Correct	27 ms	420 KB	Output is correct
73	Partially correct	44 ms	460 KB	Output is partially correct
74	Correct	37 ms	524 KB	Output is correct
75	Correct	33 ms	344 KB	Output is correct
76	Partially correct	41 ms	452 KB	Output is partially correct
77	Correct	37 ms	460 KB	Output is correct
78	Correct	1 ms	200 KB	Output is correct
79	Correct	1 ms	200 KB	Output is correct
80	Partially correct	1 ms	200 KB	Output is partially correct
81	Partially correct	1 ms	200 KB	Output is partially correct
82	Partially correct	2 ms	220 KB	Output is partially correct
83	Correct	2 ms	200 KB	Output is correct
84	Correct	2 ms	296 KB	Output is correct
85	Correct	1 ms	200 KB	Output is correct
86	Partially correct	2 ms	200 KB	Output is partially correct
87	Partially correct	2 ms	200 KB	Output is partially correct
88	Correct	2 ms	200 KB	Output is correct
89	Correct	2 ms	200 KB	Output is correct
90	Correct	1 ms	200 KB	Output is correct
91	Correct	1 ms	200 KB	Output is correct
92	Correct	2 ms	200 KB	Output is correct
93	Correct	2 ms	200 KB	Output is correct
94	Correct	1 ms	200 KB	Output is correct
95	Correct	2 ms	288 KB	Output is correct
96	Correct	1 ms	200 KB	Output is correct
97	Partially correct	2 ms	200 KB	Output is partially correct
98	Partially correct	2 ms	200 KB	Output is partially correct
99	Partially correct	2 ms	200 KB	Output is partially correct
100	Correct	2 ms	296 KB	Output is correct
101	Correct	2 ms	328 KB	Output is correct
102	Correct	1 ms	200 KB	Output is correct
103	Correct	2 ms	288 KB	Output is correct
104	Correct	2 ms	200 KB	Output is correct
105	Correct	1 ms	292 KB	Output is correct
106	Correct	1 ms	200 KB	Output is correct
107	Correct	2 ms	200 KB	Output is correct
108	Partially correct	1 ms	200 KB	Output is partially correct
109	Partially correct	1 ms	200 KB	Output is partially correct
110	Partially correct	1 ms	200 KB	Output is partially correct
111	Partially correct	1 ms	200 KB	Output is partially correct
112	Partially correct	1 ms	200 KB	Output is partially correct
113	Correct	1 ms	200 KB	Output is correct
114	Correct	1 ms	200 KB	Output is correct
115	Partially correct	1 ms	200 KB	Output is partially correct
116	Correct	1 ms	200 KB	Output is correct
117	Partially correct	2 ms	200 KB	Output is partially correct
118	Correct	2 ms	292 KB	Output is correct
119	Partially correct	2 ms	200 KB	Output is partially correct
120	Correct	2 ms	200 KB	Output is correct
121	Correct	2 ms	200 KB	Output is correct
122	Correct	2 ms	328 KB	Output is correct
123	Correct	2 ms	200 KB	Output is correct