Submission #994701
Source Code Expand
#include <iostream> #include <vector> #include <cmath> #include <algorithm> using namespace std; int main() { int N, M; cin >> N >> M; vector<int> x(N); vector<int> m(M); int ans = 0; for(int i=0; i<N; ++i) { cin >> x[i]; } sort(x.begin(), x.end()); for(int i=0; i<N; ++i) { m[x[i] % M]++; } for(int i=1; i<N;) { if(x[i] % M != 0 && x[i] == x[i-1] && m[x[i] % M] > m[M - (x[i] % M)] ) { ans++; m[x[i] % M] -= 2; i += 2; } else { i++; } } ans += m[0]/2; for(int i=1; i<M/2 + (M%2 == 0 ? 0 : 1); ++i) { ans += min(m[i], m[M-i]); } if(M % 2 == 0) { ans += m[M/2]/2; } cout << ans << endl; }
Submission Info
Submission Time | |
---|---|
Task | D - Pair Cards |
User | Suibaka |
Language | C++14 (GCC 5.4.1) |
Score | 700 |
Code Size | 804 Byte |
Status | AC |
Exec Time | 38 ms |
Memory | 1024 KB |
Judge Result
Set Name | sample | all | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 700 / 700 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
sample | sample-01.txt, sample-02.txt |
all | sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 01-11.txt, 01-12.txt, 01-13.txt, 01-14.txt, 01-15.txt, 01-16.txt, 01-17.txt, 01-18.txt, 01-19.txt, 01-20.txt, 01-21.txt, 01-22.txt, 01-23.txt, 01-24.txt, 01-25.txt, 01-26.txt, 01-27.txt, 01-28.txt, 01-29.txt, 01-30.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01-01.txt | AC | 2 ms | 256 KB |
01-02.txt | AC | 37 ms | 640 KB |
01-03.txt | AC | 37 ms | 640 KB |
01-04.txt | AC | 37 ms | 640 KB |
01-05.txt | AC | 37 ms | 640 KB |
01-06.txt | AC | 37 ms | 640 KB |
01-07.txt | AC | 37 ms | 640 KB |
01-08.txt | AC | 37 ms | 640 KB |
01-09.txt | AC | 37 ms | 640 KB |
01-10.txt | AC | 37 ms | 768 KB |
01-11.txt | AC | 38 ms | 1024 KB |
01-12.txt | AC | 32 ms | 640 KB |
01-13.txt | AC | 32 ms | 768 KB |
01-14.txt | AC | 37 ms | 640 KB |
01-15.txt | AC | 37 ms | 640 KB |
01-16.txt | AC | 37 ms | 640 KB |
01-17.txt | AC | 37 ms | 640 KB |
01-18.txt | AC | 37 ms | 640 KB |
01-19.txt | AC | 37 ms | 640 KB |
01-20.txt | AC | 37 ms | 1024 KB |
01-21.txt | AC | 36 ms | 640 KB |
01-22.txt | AC | 36 ms | 640 KB |
01-23.txt | AC | 36 ms | 640 KB |
01-24.txt | AC | 36 ms | 640 KB |
01-25.txt | AC | 36 ms | 768 KB |
01-26.txt | AC | 36 ms | 1024 KB |
01-27.txt | AC | 20 ms | 768 KB |
01-28.txt | AC | 4 ms | 640 KB |
01-29.txt | AC | 3 ms | 384 KB |
01-30.txt | AC | 3 ms | 640 KB |
sample-01.txt | AC | 2 ms | 256 KB |
sample-02.txt | AC | 2 ms | 256 KB |