[非题解]Codeforces Round #454 (Div. 2) D. Seating of Students

这题是错的…虽然不知道哪里错了，还是贴下来吧…

#include <iostream>#include <queue>using namespace std;queue<int> outp[100000];void solve(int n,int m){    int tem,i,j;    for(i=1;i<=n;i++){        tem=(i-1)*m+1;        if(i&1)tem+=!(tem&1);        else tem+=(tem&1);        for(j=1;j<=m;j++){            outp[i].push(tem);tem+=2;            if(j==(m+1)/2){                tem=(i-1)*m+1;                if(i&1)tem+=tem&1;                else tem+=!(tem&1);            }        }    }}void prt(int m,int n){    int i,j;    if(n<=m){        for(i=1;i<=n;i++){            while(!outp[i].empty())cout<<outp[i].front()<<" ",outp[i].pop();            if(i!=n)cout<<endl;        }    }else{        while(!outp[1].empty()){            for(i=1;i<=m;i++){                cout<<outp[i].front()<<" ",outp[i].pop();            }            if(!outp[1].empty())cout<<endl;        }    }}int main(){    std::ios::sync_with_stdio(false);    int n,m,i,j,num=-1,mn,flag=1;    cin>>n>>m;mn=m*n;    if(1<mn&&mn<9&&m<=3&&n<=3)cout<<"NO";    else {        cout<<"YES"<<endl;        if(m==1&&n==1)cout<<"1";        else if(m==2&&n==4)cout<<"2 3"<<endl<<"7 6"<<endl<<"4 1"<<endl<<"5 8";        else if(m==4&&n==2)cout<<"5 4 7 2"<<endl<<"3 6 1 8";        else if(m==3&&n==3)cout<<"6 1 8"<<endl<<"7 5 3"<<endl<<"2 9 4";        else if(m==1&&n==4)cout<<"2\n4\n1\n3";        else if(m==4&&n==1)cout<<"2 4 1 3";        else{            if(m<n)solve(m,n);else solve(n,m);            prt(m,n);        }    }}