Submission #88773

#	Time	Username	Problem	Language	Result	Execution time	Memory
88773		arman_ferdous	Studentsko (COCI14_studentsko)	C++17	100 / 100	6 ms	1236 KiB

studentsko

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

int n, k;
vector<int> arr, v;
map<int,int> id;

int lis() {
	vector<int> tmp;
	for(int i = 0; i < n; i++) {
		vector<int>::iterator it = upper_bound(tmp.begin(), tmp.end(), v[i]);
		if(it == tmp.end()) tmp.push_back(v[i]);
		else tmp[it - tmp.begin()] = v[i];
	} return tmp.size();
}

int main() {
	scanf("%d %d", &n, &k);
	for(int i = 0; i < n; i++) {
		int x; scanf("%d", &x);
		arr.push_back(x);
	} v = arr;
	sort(v.begin(), v.end());
	for(int i = 0; i < n; i++) 
		id[v[i]] = i/k;
	for(int i = 0; i < n; i++)
		v[i] = id[arr[i]];

	// for(int x : v) cerr << x << " "; cerr << endl;
	// 	cerr << "lis = " << lis() << endl;

	int ans = n - lis();
	printf("%d\n", ans);
	return 0;
}

Compilation message (stderr)

studentsko.cpp: In function 'int main()':
studentsko.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~
studentsko.cpp:20:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int x; scanf("%d", &x);
          ~~~~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10