Submission #2252384
Source Code Expand
#include <cstdio> #include <cstdlib> #include <iostream> #include <fstream> #include <sstream> #include <set> #include <map> #include <vector> #include <list> #include <algorithm> #include <cstring> #include <cmath> #include <string> #include <queue> #include <bitset> //UWAGA - w czasie kompilacji musi byc znany rozmiar wektora - nie mozna go zmienic #include <cassert> #include <iomanip> //do setprecision #include <ctime> #include <complex> using namespace std; #define FOR(i,b,e) for(int i=(b);i<(e);++i) #define FORQ(i,b,e) for(int i=(b);i<=(e);++i) #define FORD(i,b,e) for(int i=(b)-1;i>=(e);--i) #define REP(x, n) for(int x = 0; x < (n); ++x) #define ST first #define ND second #define PB push_back #define MP make_pair #define LL long long #define ULL unsigned LL #define LD long double const double pi = 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342; const int mod=1000000007; int main(){ int n,a[101010]={}; cin>>n; FORQ(i,1,n){ cin>>a[i]; } int c=0; FORQ(i,2,n){ if(a[i]==i&&a[i-1]==i-1){ swap(a[i],a[i-1]); c++; } } if(a[1]==1){ swap(a[1],a[2]); c++; } FORQ(i,2,n){ if(a[i]==i){ swap(a[i],a[i-1]); c++; } } cout<<c<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - Derangement |
User | kt_tenel |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 1317 Byte |
Status | AC |
Exec Time | 37 ms |
Memory | 640 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 400 / 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 | 640 KB |
0_001.txt | AC | 1 ms | 640 KB |
0_002.txt | AC | 3 ms | 640 KB |
0_003.txt | AC | 1 ms | 640 KB |
1_004.txt | AC | 1 ms | 640 KB |
1_005.txt | AC | 37 ms | 640 KB |
1_006.txt | AC | 36 ms | 640 KB |
1_007.txt | AC | 35 ms | 640 KB |
1_008.txt | AC | 36 ms | 640 KB |
1_009.txt | AC | 35 ms | 640 KB |
1_010.txt | AC | 35 ms | 640 KB |
1_011.txt | AC | 37 ms | 640 KB |
1_012.txt | AC | 36 ms | 640 KB |
1_013.txt | AC | 37 ms | 640 KB |
1_014.txt | AC | 36 ms | 640 KB |