#include #include #include #include #include using namespace atcoder; using namespace boost::multiprecision; using namespace std; #define rep(i, a, n) for(ll i = a; i < n; i++) #define rrep(i, a, n) for(ll i = a; i >= n; i--) #define ll long long #define pii pair #define pll pair //constexpr ll MOD = 1000000007; constexpr ll MOD = 998244353; constexpr int IINF = 1001001001; constexpr ll INF = 1LL<<60; template void chmax(t&a,u b){if(a void chmin(t&a,u b){if(b> x >> y; cout << x*y << " " << x*y << endl; rep(i,0,x) cout << i+1 << " " << (i+1)%x+1 << endl; rep(i,0,x)rep(j,0,y-1){ cout << i+x*j+1 << " " << i+x*(j+1)+1 << endl; } return 0; }