# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
226544 | Ruxandra985 | Rope (JOI17_rope) | C++14 | 21 ms | 23936 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
int v[1000010] , fii[1000010] , sol[1000010];
int n , m;
vector <int> w[1000010] , now;
pair <int,int> f[1000010] , fi[1000010];
void solve (int caz){
int i , first , curr , idx , x , fmax , maxi , j;
for (i = 1 ; i <= m ; i++)
w[i].clear();
for (i = caz ; i < n ; i += 2 ){
if (v[i] == v[i + 1]){
w[v[i]].push_back(i); /// unde incepe perechea
}
else {
w[v[i]].push_back(i); /// unde incepe perechea
w[v[i + 1]].push_back(i); /// unde incepe perechea
}
}
if (i == n)
w[v[n]].push_back(n);
/// in w, tin pt fiecare culoare, in ce perechi e
for (i = 1 ; i <= m ; i++){
//if (caz == 2 && i == 3)
// printf ("a");
curr = 0;
first = 2 * w[i].size();
maxi = 0;
fmax = 0;
now.clear();
/// as vrea sa tin cea mai mare val a unui elem modificat
for (j = 0 ; j < w[i].size() ; j++){
idx = w[i][j];
x = v[idx];
if (f[x].second != i){
f[x] = make_pair(1 , i);
now.push_back(x);
}
else f[x].first++;
if (x != i)
curr++;
x = v[idx + 1];
if (f[x].second != i){
f[x] = make_pair(1 , i);
now.push_back(x);
}
else f[x].first++;
if (x != i)
curr++;
}
/// in now ai valorile schimbate !!!!
if (caz == 2){
x = v[1];
if (f[x].second != i){
f[x] = make_pair(0 , i);
now.push_back(x);
}
if (x == i)
first++;
}
/// in first tii cate elem iau valoarea i
/// curr = cate elemente ai schimbat in i
for (j = 0 ; j < now.size() ; j++){
x = now[j];
if (maxi < fii[x] - f[x].first){
maxi = fii[x] - f[x].first;
fmax = x;
}
}
j = m;
while (j && f[ fi[j].second ].second == i)
j--;
if (j){
if (maxi < fi[j].first){
maxi = fi[j].first;
fmax = fi[j].second;
}
}
sol[i] = min(sol[i] , curr + n - first - maxi);
sol[fmax] = min(sol[fmax] , curr + n - first - maxi);
}
}
int main()
{
FILE *fin = stdin;
FILE *fout = stdout;
int i;
fscanf (fin,"%d%d",&n,&m);
for (i = 1 ; i <= n ; i++){
fscanf (fin,"%d",&v[i]);
fi[v[i]].first++;
fii[v[i]]++;
}
for (i = 1 ; i <= m ; i++)
fi[i].second = i;
sort (fi + 1 , fi + m + 1);
if (m == 1){ /// sa scap
fprintf (fout,"0");
return 0;
}
for (i = 1 ; i <= m ; i++)
sol[i] = 2000000000;
solve (1);
for (i = 1 ; i <= m ; i++){
f[i].second = 0;
}
solve (2);
for (i = 1 ; i <= m ; i++)
fprintf (fout,"%d\n",sol[i]);
return 0;
}
Compilation message (stderr)
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