Submission #996181
Source Code Expand
#include<iostream> #include<algorithm> using namespace std; int n,m,a[100000],c[100000],d[100000]; vector<int>b[100000]; int main(){ cin>>n>>m; for(int i=0;i<n;i++){cin>>a[i];b[a[i]%m].push_back(a[i]);} for(int i=0;i<m;i++){ sort(b[i].begin(),b[i].end());int v=1; for(int j=1;j<b[i].size();j++){ if(b[i][j]!=b[i][j-1]){if(v%2==1)c[i]++;d[i]+=v/2;v=1;} else v++; } if(b[i].size()>=1){if(v%2==1)c[i]++;d[i]+=v/2;} } int cnt=0; for(int i=0;i<=m/2;i++){ int t=(m-i)%m; if(i!=t){ int F1=min(b[i].size(),b[t].size()); int F2=F1;cnt+=F1; int G1=min(c[i],F1);F1-=G1;c[i]-=G1;if(F1>=1)d[i]-=(F1+1)/2; int G2=min(c[t],F2);F2-=G2;c[t]-=G2;if(F2>=1)d[t]-=(F2+1)/2; } if(i==t){cnt+=b[i].size()/2;c[i]=b[i].size()%2;d[i]=0;} } for(int i=0;i<m;i++)cnt+=d[i]; cout<<cnt<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - Pair Cards |
User | E869120 |
Language | C++14 (GCC 5.4.1) |
Score | 700 |
Code Size | 846 Byte |
Status | AC |
Exec Time | 51 ms |
Memory | 6912 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 | 6 ms | 2560 KB |
01-02.txt | AC | 46 ms | 3452 KB |
01-03.txt | AC | 46 ms | 3580 KB |
01-04.txt | AC | 44 ms | 3584 KB |
01-05.txt | AC | 45 ms | 3584 KB |
01-06.txt | AC | 44 ms | 3712 KB |
01-07.txt | AC | 44 ms | 3456 KB |
01-08.txt | AC | 42 ms | 3584 KB |
01-09.txt | AC | 43 ms | 3584 KB |
01-10.txt | AC | 49 ms | 4480 KB |
01-11.txt | AC | 51 ms | 5760 KB |
01-12.txt | AC | 42 ms | 3452 KB |
01-13.txt | AC | 42 ms | 3704 KB |
01-14.txt | AC | 45 ms | 3472 KB |
01-15.txt | AC | 44 ms | 3712 KB |
01-16.txt | AC | 44 ms | 3712 KB |
01-17.txt | AC | 42 ms | 3712 KB |
01-18.txt | AC | 44 ms | 3840 KB |
01-19.txt | AC | 47 ms | 3840 KB |
01-20.txt | AC | 51 ms | 6912 KB |
01-21.txt | AC | 44 ms | 3520 KB |
01-22.txt | AC | 43 ms | 3456 KB |
01-23.txt | AC | 42 ms | 3584 KB |
01-24.txt | AC | 42 ms | 3712 KB |
01-25.txt | AC | 43 ms | 3968 KB |
01-26.txt | AC | 45 ms | 4480 KB |
01-27.txt | AC | 28 ms | 4992 KB |
01-28.txt | AC | 9 ms | 3456 KB |
01-29.txt | AC | 6 ms | 2944 KB |
01-30.txt | AC | 7 ms | 3072 KB |
sample-01.txt | AC | 5 ms | 2560 KB |
sample-02.txt | AC | 6 ms | 2560 KB |