#include <bits/stdc++.h>
using namespace std;
using ll = long long; using pii = pair<ll,ll>;
ll minimum_walk(vector<int> p, int s) {
ll N = p.size();
assert(s==0);
ll ans = 0;
bool found[N];
for (ll i=0;i<N;i++) {
found[i]=0;
}
ll D = 0;
for (ll i=0;i<N;i++) {
if (!found[i]) {
ll j = i;
ll dmin = 1e8;
ll L = 0;
do {
found[j]=1;
dmin = min(dmin,j);
ans += abs(p[j]-j);
j = p[j];
L++;
} while (j != i);
if (L>1) {
D = max(D,dmin);
}
}
}
ans += 2*D;
return ans;
}
int main() {
vector<int> p1 = {0,1,2,3};
}
Compilation message
/usr/bin/ld: /tmp/ccCjx8RF.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccAg2B0F.o:books.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status
