#define _USE_MATH_DEFINES #include #include #include #include #include #include #include #include #include ///////// #define REP(i, x, n) for(int i = x; i < n; i++) #define rep(i,n) REP(i,0,n) #define P(p) std::cout<<(p)<>aaa; A[i] = (aaa+15)%16; } ban b,temp,cop; rep(i,16){ b.n[i/4][i%4] = i; b.b[i] = true; } b.wh=15; if(sol(b) == true){ P("Yes"); return 0; } queue qu; qu.push(b); int dx[4] = { 1, 0, -1, 0}; int dy[4] = { 0, 1, 0, -1}; int nx,ny; while(!qu.empty()){ cop = qu.front(); qu.pop(); for(int i=0;i<4;++i){ temp = cop; nx = (temp.wh)%4 + dx[i]; ny = (temp.wh)/4 + dy[i]; if( 0 <= nx && nx < 4 && 0 <= ny && ny < 4 && temp.b[ temp.n[ ny ][ nx ] ] == true ){ temp.b[ temp.n[ ny ][ nx ] ] = false; temp.n[ (temp.wh)/4 ][ (temp.wh)%4 ] = temp.n[ ny ][ nx ]; temp.n[ ny ][ nx ] = 15; temp.wh = (ny)*4 + nx; if( sol(temp) == true){ P("Yes"); return 0; } qu.push(temp); } } } P("No"); return 0; }