Submission #550518

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
550518	2022-04-18T10:35:14 Z	Zanite	Mutating DNA (IOI21_dna)	C++17	100 / 100	47 ms	8552 KB

#include "dna.h"
#include <bits/stdc++.h>
using namespace std;

const int A = 0, C = 1, T = 2, AC = 0, AT = 1, CA = 2, CT = 3, TA = 4, TC = 5;
const int maxN = 1e5 + 5;
int pref[maxN][6], cha[maxN][3], chb[maxN][3];

void init(string a, string b) {
	a = "#" + a;
	b = "#" + b;
	for (int i = 1; i < a.length(); i++) {
		for (int j = 0; j < 6; j++) {
			pref[i][j] = pref[i-1][j];
		}
		for (int j = 0; j < 3; j++) {
			cha[i][j] = cha[i-1][j];
			chb[i][j] = chb[i-1][j];
		}

		if (a[i] == 'A') {cha[i][A]++;}
		else if (a[i] == 'C') {cha[i][C]++;}
		else {cha[i][T]++;}

		if (b[i] == 'A') {chb[i][A]++;}
		else if (b[i] == 'C') {chb[i][C]++;}
		else {chb[i][T]++;}

		if (a[i] == b[i]) continue;

		if (a[i] == 'A') {
			if (b[i] == 'C') {pref[i][AC]++;}
			else {pref[i][AT]++;}

		} else if (a[i] == 'C') {
			if (b[i] == 'A') {pref[i][CA]++;}
			else {pref[i][CT]++;}

		} else {
			if (b[i] == 'A') {pref[i][TA]++;}
			else {pref[i][TC]++;}
		}
	}
}

int get_distance(int x, int y) {
	int cur[6], cnt[3];
	for (int i = 0; i < 6; i++) {
		cur[i] = pref[y+1][i] - pref[x][i];
	}
	for (int i = 0; i < 3; i++) {
		cnt[i] = (cha[y+1][i] - cha[x][i]) - (chb[y+1][i] - chb[x][i]);
		if (cnt[i] != 0) return -1;
	}

	int ans = 0;
	
	int m1 = min(cur[AC], cur[CA]);
	ans += m1;
	cur[AC] -= m1;
	cur[CA] -= m1;

	int m2 = min(cur[AT], cur[TA]);
	ans += m2;
	cur[AT] -= m2;
	cur[TA] -= m2;

	int m3 = min(cur[CT], cur[TC]);
	ans += m3;
	cur[CT] -= m3;
	cur[TC] -= m3;

	// {AT} {TC} {CA}
	//assert((cur[AT] == cur[TC]) && (cur[TC] == cur[CA]));
	ans += (cur[AT] << 1);

	// {AC} {CT} {TA}
	//assert((cur[AC] == cur[CT]) && (cur[CT] == cur[TA]));
	ans += (cur[AC] << 1);

	return ans;
}

Compilation message

dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:12:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |  for (int i = 1; i < a.length(); i++) {
      |                  ~~^~~~~~~~~~~~

Subtask #1
21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	37 ms	6764 KB	Output is correct
2	Correct	36 ms	8232 KB	Output is correct
3	Correct	44 ms	7688 KB	Output is correct
4	Correct	42 ms	8180 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	308 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct

Subtask #2
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	5 ms	5716 KB	Output is correct
5	Correct	5 ms	5816 KB	Output is correct
6	Correct	5 ms	5844 KB	Output is correct
7	Correct	7 ms	5416 KB	Output is correct
8	Correct	5 ms	5844 KB	Output is correct
9	Correct	4 ms	5844 KB	Output is correct

Subtask #3
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	5 ms	5716 KB	Output is correct
5	Correct	5 ms	5816 KB	Output is correct
6	Correct	5 ms	5844 KB	Output is correct
7	Correct	7 ms	5416 KB	Output is correct
8	Correct	5 ms	5844 KB	Output is correct
9	Correct	4 ms	5844 KB	Output is correct
10	Correct	38 ms	8112 KB	Output is correct
11	Correct	47 ms	8212 KB	Output is correct
12	Correct	35 ms	8184 KB	Output is correct
13	Correct	36 ms	8340 KB	Output is correct
14	Correct	35 ms	8540 KB	Output is correct
15	Correct	37 ms	8472 KB	Output is correct
16	Correct	39 ms	8032 KB	Output is correct
17	Correct	34 ms	8216 KB	Output is correct
18	Correct	33 ms	8488 KB	Output is correct
19	Correct	30 ms	8116 KB	Output is correct
20	Correct	33 ms	8212 KB	Output is correct
21	Correct	31 ms	8412 KB	Output is correct

Subtask #4
28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	5 ms	5716 KB	Output is correct
5	Correct	5 ms	5816 KB	Output is correct
6	Correct	5 ms	5844 KB	Output is correct
7	Correct	7 ms	5416 KB	Output is correct
8	Correct	5 ms	5844 KB	Output is correct
9	Correct	4 ms	5844 KB	Output is correct
10	Correct	5 ms	5400 KB	Output is correct
11	Correct	6 ms	5952 KB	Output is correct
12	Correct	7 ms	5424 KB	Output is correct
13	Correct	6 ms	5720 KB	Output is correct
14	Correct	6 ms	5844 KB	Output is correct
15	Correct	5 ms	5844 KB	Output is correct

Subtask #5
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	37 ms	6764 KB	Output is correct
2	Correct	36 ms	8232 KB	Output is correct
3	Correct	44 ms	7688 KB	Output is correct
4	Correct	42 ms	8180 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	1 ms	308 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	5 ms	5716 KB	Output is correct
12	Correct	5 ms	5816 KB	Output is correct
13	Correct	5 ms	5844 KB	Output is correct
14	Correct	7 ms	5416 KB	Output is correct
15	Correct	5 ms	5844 KB	Output is correct
16	Correct	4 ms	5844 KB	Output is correct
17	Correct	38 ms	8112 KB	Output is correct
18	Correct	47 ms	8212 KB	Output is correct
19	Correct	35 ms	8184 KB	Output is correct
20	Correct	36 ms	8340 KB	Output is correct
21	Correct	35 ms	8540 KB	Output is correct
22	Correct	37 ms	8472 KB	Output is correct
23	Correct	39 ms	8032 KB	Output is correct
24	Correct	34 ms	8216 KB	Output is correct
25	Correct	33 ms	8488 KB	Output is correct
26	Correct	30 ms	8116 KB	Output is correct
27	Correct	33 ms	8212 KB	Output is correct
28	Correct	31 ms	8412 KB	Output is correct
29	Correct	5 ms	5400 KB	Output is correct
30	Correct	6 ms	5952 KB	Output is correct
31	Correct	7 ms	5424 KB	Output is correct
32	Correct	6 ms	5720 KB	Output is correct
33	Correct	6 ms	5844 KB	Output is correct
34	Correct	5 ms	5844 KB	Output is correct
35	Correct	1 ms	308 KB	Output is correct
36	Correct	34 ms	7756 KB	Output is correct
37	Correct	35 ms	8192 KB	Output is correct
38	Correct	37 ms	8272 KB	Output is correct
39	Correct	39 ms	8548 KB	Output is correct
40	Correct	35 ms	8552 KB	Output is correct
41	Correct	5 ms	5824 KB	Output is correct
42	Correct	32 ms	8192 KB	Output is correct
43	Correct	34 ms	8476 KB	Output is correct
44	Correct	35 ms	8472 KB	Output is correct
45	Correct	35 ms	8120 KB	Output is correct
46	Correct	31 ms	8464 KB	Output is correct
47	Correct	33 ms	8488 KB	Output is correct

Submission #550518

Compilation message

Subtask #1 21.0 / 21.0

Subtask #2 22.0 / 22.0

Subtask #3 13.0 / 13.0

Subtask #4 28.0 / 28.0

Subtask #5 16.0 / 16.0

Subtask #1
21.0 / 21.0

Subtask #2
22.0 / 22.0

Subtask #3
13.0 / 13.0

Subtask #4
28.0 / 28.0

Subtask #5
16.0 / 16.0