Problem Link : http://train.usaco.org/usacoprob2?a=tffkkLavmsp&S=ariprog
/* PROG: ariprog LANG: C++ */ #include <bits/stdc++.h> #define pii pair <int,int> #define sc scanf #define pf printf #define Pi 2*acos(0.0) #define ms(a,b) memset(a, b, sizeof(a)) #define pb(a) push_back(a) #define MP make_pair #define db double #define ll long long #define EPS 10E-10 #define ff first #define ss second #define sqr(x) (x)*(x) #define D(x) cout<<#x " = "<<(x)<<endl #define VI vector <int> #define DBG pf("Hi\n") #define MOD 100007 #define MAX 10000 #define CIN ios_base::sync_with_stdio(0); cin.tie(0) #define SZ(a) (int)a.size() #define sf(a) scanf("%d",&a) #define sfl(a) scanf("%lld",&a) #define sff(a,b) scanf("%d %d",&a,&b) #define sffl(a,b) scanf("%lld %lld",&a,&b) #define sfff(a,b,c) scanf("%d %d %d",&a,&b,&c) #define sfffl(a,b,c) scanf("%lld %lld %lld",&a,&b,&c) #define loop(i,n) for(int i=0;i<n;i++) #define REP(i,a,b) for(int i=a;i<=b;i++) #define TEST_CASE(t) for(int z=1;z<=t;z++) #define PRINT_CASE printf("Case %d: ",z) #define all(a) a.begin(),a.end() #define intlim 2147483648 #define inf 1000000 #define ull unsigned long long using namespace std; /*----------------------Graph Moves----------------*/ //const int fx[]={+1,-1,+0,+0}; //const int fy[]={+0,+0,+1,-1}; //const int fx[]={+0,+0,+1,-1,-1,+1,-1,+1}; // Kings Move //const int fy[]={-1,+1,+0,+0,+1,+1,-1,-1}; // Kings Move //const int fx[]={-2, -2, -1, -1, 1, 1, 2, 2}; // Knights Move //const int fy[]={-1, 1, -2, 2, -2, 2, -1, 1}; // Knights Move /*------------------------------------------------*/ /*-----------------------Bitmask------------------*/ //int Set(int N,int pos){return N=N | (1<<pos);} //int reset(int N,int pos){return N= N & ~(1<<pos);} //bool check(int N,int pos){return (bool)(N & (1<<pos));} /*------------------------------------------------*/ int n,m; bool present[300000]; int main() { freopen("ariprog.in","r",stdin); freopen("ariprog.out","w",stdout); int maxx=INT_MIN; cin>>n>>m; for(int i=0; i<=m; i++) for(int j=0; j<=m; j++) present[i*i+j*j]=1,maxx=max(maxx,i*i+j*j); vector<int>v; REP(i,0,maxx) if(present[i]) v.pb(i); vector<pii>ans; int l=SZ(v); for(int i=0; i<l; i++) for(int j=i+1; j<l; j++) { int dis=v[j]-v[i]; int k; int sum=v[i]+dis; for(k=0; k<n-2; k++) { sum+=dis; if(!present[sum] || sum>2*m*m) { break; } } if(k==n-2) ans.pb(MP(dis,v[i])); } sort(all(ans)); if(SZ(ans)) loop(i,SZ(ans)) cout<<ans[i].ss<<" "<<ans[i].ff<<endl; else cout<<"NONE"<<endl; return 0; }