이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int valid(int n, int v[])
{
int i, x = -1, y;
vector<bool> w(250000, 0);
for (i = 0; i < n; i++)
{
v[i]--;
if (w[v[i]])
return 0;
w[v[i]] = 1;
if (v[i] < n)
{
y = v[i] - i;
if (y < 0)
y += n;
if (x == -1)
x = y;
if (x != y)
return 0;
}
}
return 1;
}
int replacement(int n, int v[], int rS[])
{
int i, x = -1, y, t = n, j = 0;
vector<bool> w(250000, 0);
vector<vector<int> > in(n);
for (i = 0; i < n; i++)
{
v[i]--;
if (w[v[i]])
return 0;
w[v[i]] = 1;
if (v[i] < n)
{
y = v[i] - i;
if (y < 0)
y += n;
if (x == -1)
x = y;
if (x != y)
return 0;
}
}
if (x == -1)
x = 0;
for (i = 0; i < n; i++)
in[(i + x) % n] = {v[i], (i + x) % n};
sort(in.begin(), in.end());
for (i = 0; i < n; i++)
{
if (in[i][0] < n)
continue;
rS[j] = in[i][1] + 1;
j++;
t++;
while (t <= in[i][0])
{
rS[j] = t;
j++;
t++;
}
}
return j;
}
ll r = 1000000009, p;
ll po(ll a, int b)
{
if (!b)
return 1;
ll t = po(a, b / 2);
t *= t;
t %= r;
if (b % 2)
return t * a % r;
return t;
}
int countReplacement(int n, int v[])
{
int i, x = -1, y, t = n, m;
vector<int> in;
for (i = 0; i < n; i++)
{
v[i]--;
if (v[i] < n)
{
y = v[i] - i;
if (y < 0)
y += n;
if (x == -1)
x = y;
if (x != y)
return 0;
}
else
in.push_back(v[i]);
}
m = in.size();
sort(in.begin(), in.end());
if (m == n)
p = n;
else
p = 1;
for (i = 0; i < in.size(); i++)
{
if (in[i] < t)
return 0;
p *= po(m - i, in[i] - t);
p %= r;
t = in[i] + 1;
}
return p;
}
컴파일 시 표준 에러 (stderr) 메시지
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:109:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
109 | for (i = 0; i < in.size(); i++)
| ~~^~~~~~~~~~~
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