Submission #921013

#	Time	Username	Problem	Language	Result	Execution time	Memory
921013		salmon	Ancient Books (IOI17_books)	C++14	Compilation error	0 ms	0 KiB

books

#include <cstdio>
#include <vector>
#include <bits/stdc++.h>
using namespace std;

long long minimum_walk(vector<int> p, int s) {
    bool done[1100100];
    int N = p.size();

    int un = N;
    int soom = 0;

    int i = 0;

    /*while(un != 0){
        if(start )
    }*/
    int fre = 0;


    for(int i = 0; i < N; i++){
        if(done[i]) continue;

        if(i > fre && i != p[i]){
            soom += 2;
        }

        int j = p[i];
        soom += abs(j - i);
        while(j != i){
            int temp = j;
            fre = max(fre,j);
            done[j] = true;
            j = p[j];
            soom += abs(temp - j);
        }
    }


    return soom;
}

int main() {
	int n, s;
	assert(2 == scanf("%d %d", &n, &s));

	vector<int> p((unsigned) n);
	for(int i = 0; i < n; i++)
		assert(1 == scanf("%d", &p[(unsigned) i]));

	long long res = minimum_walk(p, s);
	printf("%lld\n", res);

	return 0;
}

Compilation message (stderr)

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:12:9: warning: unused variable 'un' [-Wunused-variable]
   12 |     int un = N;
      |         ^~
books.cpp:15:9: warning: unused variable 'i' [-Wunused-variable]
   15 |     int i = 0;
      |         ^
/usr/bin/ld: /tmp/cc49mZUR.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cccd8WcR.o:books.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status