Submission #670557

#	Time	Username	Problem	Language	Result	Execution time	Memory
670557		sleepntsheep	Mutating DNA (IOI21_dna)	C++17	Compilation error	0 ms	0 KiB

dna

#include <stdio.h>
#include <string.h>
#include <string>

using namespace std;
#define N 100005
#define ABS(x) ((x) < 0 ? (-(x)) : (x))

char a[N], b[N];
int unlike[N];
int counta[N][3];
int countb[N][3];

void init(string a_, string b_) {
    strcpy(a+1, a_.c_str());
    strcpy(b+1, b_.c_str());
    for (int i = 1; a[i]; i++) {
        unlike[i] = unlike[i-1] + !!(a[i] - b[i]);
        for (int j = 0; j < 3; j++) {
            counta[i][j] = counta[i-1][j] + (j["ATC"] == a[i]);
            countb[i][j] = countb[i-1][j] + (j["ATC"] == b[i]);
        }
    }
}

int get_distance(int x, int y) {
    x++;y++;
    for (int i = 0; i < 3; i++)
        if (counta[y][i] - counta[x-1][i] != countb[y][i] - countb[x-1][i])
            return -1;
    return (unlike[y] - unlike[x-1]) - 1;
}

int main(void) {
    init("ATACAT", "ACTATA");
    printf("%d\n", get_distance(1, 3));
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccyweS6W.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccfePEGZ.o:dna.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status