Submission #5874197
Source Code Expand
#include <bits/stdc++.h> using namespace std; #define int long long #define rep(i,n) for(int i=0;i<(n);i++) signed main(){ int n,m;cin>>n>>m; vector<int>x(n); for(auto&& u:x)cin>>u; map<int,vector<int>> div; for(auto&& u:x)div[u%m].push_back(u); int ret=0; ret+=div[0].size()/2; if(m%2==0)ret+=div[m/2].size()/2; for(int i=1;i<m/2;i++){ int x=i,y=m-x; int nx=div[x].size(),ny=div[y].size(); if(nx>ny)swap(x,y); ret+=nx; int pr=0; for(int j=0;j<y-1;j++){ sort(begin(div[y]),end(div[y]); if(div[y][j]==div[y][j+1]){pr++;j++;} } ret+=min(ny-nx,pr); } cout<<ret<<endl; }
Submission Info
Submission Time | |
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Task | D - Pair Cards |
User | mnrutd |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 631 Byte |
Status | CE |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:22:34: error: expected ‘)’ before ‘;’ token sort(begin(div[y]),end(div[y]); ^