Submission #438181

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
438181	2021-06-27 17:58:46	BrunoPloumhans	Mutating DNA (IOI21_dna)	C++17	100 / 100	42 ms	5124 KiB

dna

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#include "dna.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 100000;
char achars[] = { 'A', 'A', 'T', 'T', 'C', 'C' };
char bchars[] = { 'T', 'C', 'A', 'C', 'A', 'T' };
int sums[MAXN+1][6];
void init(std::string a, std::string b) {
    for (int i = 0; i < a.length(); ++i) {
        for (int j = 0; j < 6; ++j) {
            sums[i+1][j] = sums[i][j] + (a[i] == achars[j] && b[i] == bchars[j]);
        }
    }
}
inline int get(int x, int y, int idx) {
    return sums[y+1][idx] - sums[x][idx];
}
inline void apply_pair(int& p1, int& p2, int& tot) {
    int app = min(p1, p2);
    p1 -= app;
    p2 -= app;
    tot += app;
    //cout << "Paired " << app << endl;
}
 
 
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Compilation message (stderr)

dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:13:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for (int i = 0; i < a.length(); ++i) {
      |                     ~~^~~~~~~~~~~~

• Subtask 1: 21 / 21
• Subtask 2: 22 / 22
• Subtask 3: 13 / 13
• Subtask 4: 28 / 28
• Subtask 5: 16 / 16