#define _USE_MATH_DEFINES #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include//assert(); //#include //xAOJ ///////// #define REP(i, x, n) for(int i = x; i < n; i++) #define rep(i,n) REP(i,0,n) #define P(p) cout<<(p)< ///////// typedef long long LL; typedef long double LD; typedef unsigned long long ULL; ///////// using namespace::std; ///////// ///////// class UnionFind{ public: int cNum;//要素数 vector parent; vector color; vector< set< int > > tonari; UnionFind(int n){ cNum = n; parent = vector(n); color = vector(n); tonari = vector< set >(n); for(int i=0;i> H >> W; UnionFind UF(H*W); int incolor; for(int h=0;h> incolor; if( incolor == 1 ){ UF.color[h*W + w] = true; }else{ UF.color[h*W + w] = false; } } } //////////////// if( 1 0 ){ if( UF.color[h*W+w] == UF.color[(h-1)*W + w] ){ UF.add(h*W+w,(h-1)*W+w ); }else{ UF.tonariAdd(h*W+w,(h-1)*W+w); } } if( w> 0 ){ if( UF.color[h*W+w] == UF.color[h*W+(w-1)] ){ UF.add( h*W+w,h*W+(w-1) ); }else{ UF.tonariAdd(h*W+w,h*W+(w-1) ); } } } } //////////////// int Q; cin >> Q; int R,C,Xnum; bool X; set::iterator it,endit; int ter; set tempset; while(Q--){ cin >> R >> C >> Xnum; --R;--C; if( Xnum == 1 ){ X = true; }else{ X = false; } ter = UF.find(R*W+C); if( UF.color[ ter ] == X ) continue; UF.color[ter] = X; tempset = UF.tonari[ ter ]; it = tempset.begin(); endit = tempset.end(); for(;it != endit;++it){ UF.add( ter, *it); } tempset.clear(); it = UF.tonari[ ter ].begin(); endit = UF.tonari[ ter ].end(); for(;it != endit; ++it){ if( !UF.same(ter,*it) ){ tempset.insert(*it); } } UF.tonari[ ter ].swap( tempset ); } for(int h=0;h