Submission #915281

#	Time	Username	Problem	Language	Result	Execution time	Memory
915281		ByeWorld	Gondola (IOI14_gondola)	C++14	25 / 100	8 ms	4052 KiB

gondola

#include "gondola.h"
#include <bits/stdc++.h>
#define bupol __builtin_popcount
#define ll long long
#define ld long double
#define fi first
#define se second
#define pb push_back
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
using namespace std;
const int MAXN = 3e5+10;
const int MAXK = 205;
const int LOG = 20;
const int MOD = 1e9+7;
const int SQRT = 520;
const int INF = 1e9+10;
typedef pair<int,int> pii;
typedef pair<int, pii> ipii;

int n;
int a[MAXN], sta[MAXN], idx = -1;
vector <int> vec, ans; vector <pii> sw;
bool use[MAXN];
int mn = INF, mx = -1;

int valid(int N, int inputSeq[])
{
	n = N;
	for(int i=1; i<=n; i++) a[i] = inputSeq[i-1];

	for(int i=1; i<=n; i++){
		if(mn > a[i]){
			mn = a[i]; idx = i;
		}
	}
	assert(idx != -1); 
	vec.pb(-1);
	for(int i=idx; i<=n; i++) vec.pb(a[i]);
	for(int i=1; i<=idx-1; i++) vec.pb(a[i]);

	for(int i=1; i<=n; i++){
		if(use[vec[i]]) return 0; // ngedobel
		use[vec[i]] = 1;

		if(vec[i] >= n+1) continue; // gpp gk dicek
 		
 		// vec[i] <= n
 		int num = vec[1]+i-1; // harusnya angkanya brp
 		if(num >= n+1) num -= n;

		if(mx >= vec[i] || vec[i] != num) return 0; // loh kok turun
		mx = max(mx, vec[i]);
	}
 	return 1;
}

//----------------------

int replacement(int N, int gondolaSeq[], int replacementSeq[])
{
	n = N;
	for(int i=1; i<=n; i++) a[i] = gondolaSeq[i-1];
 	for(int i=1; i<=n; i++){
		if(mn > a[i]){
			mn = a[i]; idx = i;
		}
	}
	assert(idx != -1); 
	vec.pb(-1);
	for(int i=idx; i<=n; i++) vec.pb(a[i]);
	for(int i=1; i<=idx-1; i++) vec.pb(a[i]);

	for(int i=1; i<=n; i++){
		if(use[vec[i]]) return 0; // ngedobel
		use[vec[i]] = 1;

 		int num = vec[1]+i-1; // harusnya angkanya brp
 		if(num >= n+1) num -= n;
 		sta[i] = num; // startnya brp

		if(vec[i] <= n) continue; // gpp gk dicek
		if(vec[i] >= n+1){
			sw.pb({i, num});
		}
	}
	sort(sw.begin(), sw.end());
	//for(auto in : sw) cout << vec[in.fi] << ' ' << in.se << " p\n";

	for(auto in : sw){
		int idx = in.fi, val = vec[idx], num = in.se; // num -> val

		int cnt = n+1;
		ans.pb(sta[idx]); sta[idx] = cnt++;
		for(int i=sta[idx]; i<=val-1; i++){
			ans.pb(sta[idx]);
			sta[idx] = cnt++;
		}
	}

	for(int i=0; i<ans.size(); i++) replacementSeq[i] = ans[i];
 	return (int)(ans.size());
}

//----------------------

int countReplacement(int N, int inputSeq[])
{
	n = N;
	for(int i=1; i<=n; i++) a[i] = inputSeq[i-1];
 	return -3;
}

Compilation message (stderr)

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:92:36: warning: unused variable 'num' [-Wunused-variable]
   92 |   int idx = in.fi, val = vec[idx], num = in.se; // num -> val
      |                                    ^~~
gondola.cpp:102:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |  for(int i=0; i<ans.size(); i++) replacementSeq[i] = ans[i];
      |               ~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 20
• Subtask 7: 0 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10