Submission #1318751
Source Code Expand
#include <bits/stdc++.h> using namespace std; const int DIM = 1e5 + 5; int cnt1[DIM], frq[DIM], cnt2[DIM]; int main( void ) { int n, m; cin >> n >> m; for( int i = 1; i <= n; i ++ ) { int x; cin >> x; cnt1[x % m] ++; frq[x] ++; if( frq[x] % 2 == 0 ) cnt2[x % m] ++; } int ans = cnt1[0] / 2; cnt1[0] = 0; if( m % 2 == 0 ) { ans += cnt1[m / 2] / 2; cnt1[m / 2] = 0; } for( int i = 1; i <= m / 2; i ++ ) { int aux = min( cnt1[i], cnt1[m - i] ); ans += aux; cnt1[i] -= aux; cnt1[m - i] -= aux; } for( int i = 1; i < m; i ++ ) ans += min( cnt1[i] / 2, cnt2[i] ); cout << ans << endl; return 0; }
Submission Info
Submission Time | |
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Task | D - Pair Cards |
User | EmanuelNrx |
Language | C++14 (GCC 5.4.1) |
Score | 700 |
Code Size | 860 Byte |
Status | AC |
Exec Time | 38 ms |
Memory | 1408 KB |
Judge Result
Set Name | sample | all | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 700 / 700 | ||||
Status |
|
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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, sample-01.txt, sample-02.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01-01.txt | AC | 1 ms | 256 KB |
01-02.txt | AC | 37 ms | 640 KB |
01-03.txt | AC | 36 ms | 640 KB |
01-04.txt | AC | 38 ms | 640 KB |
01-05.txt | AC | 37 ms | 640 KB |
01-06.txt | AC | 36 ms | 640 KB |
01-07.txt | AC | 36 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 | 896 KB |
01-11.txt | AC | 37 ms | 1408 KB |
01-12.txt | AC | 37 ms | 256 KB |
01-13.txt | AC | 38 ms | 384 KB |
01-14.txt | AC | 36 ms | 640 KB |
01-15.txt | AC | 36 ms | 640 KB |
01-16.txt | AC | 36 ms | 640 KB |
01-17.txt | AC | 36 ms | 640 KB |
01-18.txt | AC | 36 ms | 640 KB |
01-19.txt | AC | 35 ms | 640 KB |
01-20.txt | AC | 38 ms | 1024 KB |
01-21.txt | AC | 37 ms | 640 KB |
01-22.txt | AC | 37 ms | 640 KB |
01-23.txt | AC | 38 ms | 640 KB |
01-24.txt | AC | 37 ms | 640 KB |
01-25.txt | AC | 38 ms | 896 KB |
01-26.txt | AC | 38 ms | 1408 KB |
01-27.txt | AC | 19 ms | 896 KB |
01-28.txt | AC | 3 ms | 1152 KB |
01-29.txt | AC | 2 ms | 768 KB |
01-30.txt | AC | 2 ms | 640 KB |
sample-01.txt | AC | 1 ms | 256 KB |
sample-02.txt | AC | 1 ms | 256 KB |