Submission #418190

#	Time	Username	Problem	Language	Result	Execution time	Memory
418190		iulia13	Gondola (IOI14_gondola)	C++14	60 / 100	24 ms	2348 KiB

gondola

#include <bits/stdc++.h>
#include "gondola.h"
using namespace std;
#define ll long long
const int N = 1e5 + 5;
const int mod = 1e9 + 9;
int vc[N];
int valid(int n, int v[])
{
    int poz = -1, val, i;
    for (i = 0; i < n; i++)
        if (v[i] <= n)
        {
            val = v[i];
            poz = i;
            break;
        }
    if (poz == -1)
    {
        sort(v, v + n);
    for (i = 1; i < n; i++)
        if (v[i] == v[i - 1])
            return 0;
            return 1;
    }
    for (i = poz + 1; i < n; i++)
    {
        if (n < v[i])
            continue;
        int x = val + i - poz;
        if (x > n)
            x -= n;
        if (x != v[i])
            return 0;
    }
    sort(v, v + n);
    for (i = 1; i < n; i++)
        if (v[i] == v[i - 1])
            return 0;
    return 1;
}
struct ura{
    int orig, now;
};
ura a[N];
bool cmp(ura x, ura y)
{
    return x.now < y.now;
}
int replacement(int n, int v[], int ans[])
{
    int poz = -1, cnt = 0, l = 0, val, i;
    for (i = 0; i < n; i++)
        if (v[i] <= n)
        {
            val = v[i];
            poz = i;
            break;
        }
    if (poz == -1)
        poz = 0, val = 1;
    for (i = 0; i < n; i++)
    {
        if (v[i] <= n)
            continue;
        int x = val + i - poz;
        if (x > n)
            x -= n;
        a[++cnt] = {x, v[i]};
    }
    int last = n + 1;
    sort(a + 1, a + cnt + 1, cmp);
    for (i = 1; i <= cnt; i++)
    {
        ans[l++] = a[i].orig;
        while(last < a[i].now)
        {
            ans[l++] = last;
            last++;
        }
        last++;
    }
    return l;
}
int inm (int x, int y)
{
    ll p = x;
    ll q = y;
    return x * y % mod;
}
int rid(int b, int e)
{
    int r = 1;
    while(e)
    {
        if (e % 2)
            r = inm(r, b);
        inm(b, b);
        e /= 2;
    }
    return r;
}
int countReplacement(int n, int v[])
{
    if (!valid(n, v))
        return 0;
    int ok = 1, i;
	for(i = 0; i < n && ok; i++)
		if(v[i] <= n)
			ok = 0;
	sort(v, v + n);
	vector <int> v2;
	v2.push_back(n);
	int poz = -1;
	for(i = 0; i < n; i++)
		if(v[i] > n)
		{
			if(poz == -1)
				poz = n - i;
			v2.push_back(v[i]);
		}
	int sol = 1;
	for(i = 0; i < v2.size() - 1; i++)
	{
		sol = inm(sol, rid(poz, v2[i + 1] - v2[i] - 1));
		poz--;
	}
	if(ok)
		sol = inm(sol, n);
	return sol;
}

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:22:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   22 |         if (v[i] == v[i - 1])
      |         ^~
gondola.cpp:24:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   24 |             return 1;
      |             ^~~~~~
gondola.cpp: In function 'int inm(int, int)':
gondola.cpp:87:8: warning: unused variable 'p' [-Wunused-variable]
   87 |     ll p = x;
      |        ^
gondola.cpp:88:8: warning: unused variable 'q' [-Wunused-variable]
   88 |     ll q = y;
      |        ^
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:123:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  123 |  for(i = 0; i < v2.size() - 1; i++)
      |             ~~^~~~~~~~~~~~~~~

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