Submission #1558499
Source Code Expand
#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
#define dprint(Exp,...) if(Exp){fprintf(stderr, __VA_ARGS__);}
#define printe(...) fprintf(stderr, __VA_ARGS__);
#define PrtExp(_Exp) cerr<< #_Exp <<" = "<< (_Exp)
#define PrtExpN(_Exp) cerr<< #_Exp <<" = "<< (_Exp) <<"\n"
#define SINT(n) scanf("%d",&n)
#define SINT2(n,m) scanf("%d %d",&n,&m)
#define SINT3(n,m,o) scanf("%d %d %d",&n,&m,&o)
#define SINT4(n,m,o,p) scanf("%d %d %d %d",&n,&m,&o,&p)
#define SINT5(n,m,o,p,q) scanf("%d %d %d %d %d",&n,&m,&o,&p,&q)
#define SLL(n) scanf("%lld",&n)
#define SLL2(n,m) scanf("%lld %lld",&n,&m)
#define SLL3(n,m,o) scanf("%lld %lld %lld",&n,&m,&o)
#define SST(s) scanf("%s",s)
#define SCH(c) scanf("%c",&c)
#define GC() getchar()
#define PINT(n) printf("%d",(int)(n))
#define PINT2(n,m) printf("%d %d",(int)(n),(int)(m))
#define PINT3(n,m,l) printf("%d %d %d",(int)(n),(int)(m),(int)(l))
#define PLL(n) printf("%lld",(long long)(n))
#define PST(s) printf("%s",(s))
#define PCH(s) printf("%c",(s))
#define PINTN(n) printf("%d\n",(int)(n))
#define PINT2N(n,m) printf("%d %d\n",(int)(n),(int)(m))
#define PINT3N(n,m,l) printf("%d %d %d\n",(int)(n),(int)(m),(int)(l))
#define PLLN(n) printf("%lld\n",(long long)(n))
#define PSTN(s) printf("%s\n",(s))
#define PCHN(s) printf("%c\n",(s))
#define PSP() printf(" ")
#define PN() printf("\n")
#define PC(c) putchar(c)
#define CSP (' ')
#define SN ("\n")
#define rep(i,a) for(int i=0;i<a;i++)
#define reP(i,a) for(int i=0;i<=a;i++)
#define Rep(i,a) for(int i=a-1;i>=0;i--)
#define ReP(i,a) for(int i=a;i>=0;i--)
#define rEp(i,a) for(i=0;i<a;i++)
#define rEP(i,a) for(i=0;i<=a;i++)
#define REp(i,a) for(i=a-1;i>=0;i--)
#define REP(i,a) for(i=a;i>=0;i--)
#define repft(i,a,b) for(int i=a;i<b;i++)
#define repfT(i,a,b) for(int i=a;i<=b;i++)
#define Repft(i,a,b) for(int i=a-1;i>=b;i--)
#define RepfT(i,a,b) for(int i=a;i>=b;i--)
#define foreach(a,it) for(auto it = a.begin(); it != a.end(); ++it)
#define FILL(a,v) fill(begin(a),end(a), v)
#define FILL0(a) memset(a,0,sizeof(a))
#define FILL1(a) memset(a,-1,sizeof(a))
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> Pi;
typedef pair<ll, ll> Pll;
const int INF = 0x2aaaaaaa; // 715,827,882
const ll INFLL = 0x1f1f1f1f1f1f1f1fLL;//2,242,545,357,980,376,863
template <class A, class B> inline ostream& operator<<(ostream& st, const pair<A, B>& P) { return st << "(" << P.first << "," << P.second << ")"; };
template <class A, class B> inline pair<A, B> operator+(const pair<A, B>& P, const pair<A, B>& Q) { return pair<A, B>(P.first + Q.first, P.second + Q.second); };
template <class A, class B> inline pair<A, B> operator-(const pair<A, B>& P, const pair<A, B>& Q) { return pair<A, B>(P.first - Q.first, P.second - Q.second); };
#define fs first
#define sc second
int x[100005] = {};
int main() {
int n;
cin >> n;
bool f = true;
int j;
ll ret = 0;
rep(i, n) {
int p;
cin >> p; --p;
if (i == p) {
if (f) {
j = i;
} else {
ret += i - j;
}
f = !f;
}
}
cout << ret << endl;
}
/*
1 4 3 5 2
. .
1 2 4 9 5 8 7 3 6
. . . .
*/
Submission Info
Submission Time |
|
Task |
D - Derangement |
User |
TumoiYorozu |
Language |
C++14 (GCC 5.4.1) |
Score |
0 |
Code Size |
3240 Byte |
Status |
WA |
Exec Time |
39 ms |
Memory |
256 KB |
Judge Result
Set Name |
Sample |
All |
Score / Max Score |
0 / 0 |
0 / 400 |
Status |
|
|
Set Name |
Test Cases |
Sample |
0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt |
All |
0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt |
Case Name |
Status |
Exec Time |
Memory |
0_000.txt |
AC |
1 ms |
256 KB |
0_001.txt |
AC |
1 ms |
256 KB |
0_002.txt |
AC |
1 ms |
256 KB |
0_003.txt |
AC |
1 ms |
256 KB |
1_004.txt |
WA |
1 ms |
256 KB |
1_005.txt |
AC |
36 ms |
256 KB |
1_006.txt |
AC |
36 ms |
256 KB |
1_007.txt |
AC |
36 ms |
256 KB |
1_008.txt |
WA |
36 ms |
256 KB |
1_009.txt |
AC |
39 ms |
256 KB |
1_010.txt |
WA |
35 ms |
256 KB |
1_011.txt |
WA |
36 ms |
256 KB |
1_012.txt |
WA |
37 ms |
256 KB |
1_013.txt |
WA |
37 ms |
256 KB |
1_014.txt |
WA |
36 ms |
256 KB |