Submission #1767978
Source Code Expand
#include <cstdio> #include <cmath> #include <numeric> #include <algorithm> #include <vector> #include <stack> #include <queue> #include <deque> #include <map> #include <utility> #include <string> using namespace std; typedef long long ll; typedef unsigned int uint; typedef unsigned long long ul; const int iinf = 1 << 29; const long long linf = 1l << 61; int N; int p[100800]; int main(int argc, char* argv[]) { scanf("%d", &N); for(int i = 0; i < N; i++) scanf("%d", &p[i]); int ans = 0; int j = 0; for(int i = 0; i < N; i++) { if(p[i] == i + 1) { j++; } else { ans += j / 2 + j % 2; j = 0; } } ans += j / 2 + j % 2; printf("%d\n", ans); return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - Derangement |
User | neiteng |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 738 Byte |
Status | AC |
Exec Time | 10 ms |
Memory | 512 KB |
Compile Error
./Main.cpp: In function ‘int main(int, char**)’: ./Main.cpp:27:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ ./Main.cpp:28:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i = 0; i < N; i++) scanf("%d", &p[i]); ^
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 | 128 KB |
0_001.txt | AC | 1 ms | 128 KB |
0_002.txt | AC | 1 ms | 128 KB |
0_003.txt | AC | 1 ms | 128 KB |
1_004.txt | AC | 1 ms | 128 KB |
1_005.txt | AC | 10 ms | 512 KB |
1_006.txt | AC | 10 ms | 512 KB |
1_007.txt | AC | 10 ms | 512 KB |
1_008.txt | AC | 10 ms | 512 KB |
1_009.txt | AC | 10 ms | 512 KB |
1_010.txt | AC | 10 ms | 512 KB |
1_011.txt | AC | 10 ms | 512 KB |
1_012.txt | AC | 10 ms | 512 KB |
1_013.txt | AC | 10 ms | 512 KB |
1_014.txt | AC | 10 ms | 512 KB |