#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define rd_init() char*rp=({char*mmap();mmap(0l,1l<<25,1,2,0,0ll);})
#define rd() ({long _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;})
#define wt(v) ({ulong _z=v;do*--wp=_z%10+48;while(_z/=10);})
#define wt1(v) ({char wbuf[64],*wp=wbuf+sizeof wbuf;wt(v);write(1,wp,wbuf+sizeof wbuf-wp);})
#define rep(v,e) for(typeof(e) v=0;v<e;++v)
#define rrep(v,e) for(typeof(e) v=e;--v>=0;)
#define chmax(v,a) (v=v>=a?v:a)

typedef unsigned long ulong;

char wbuf[1<<25];
long d[301][301];

int main(){
	rd_init();
	int n=rd();
	int x=rd();
	int y=rd();
	rep(i,n){
		int a=rd();
		int b=rd();
		int c=rd();
		rrep(v,y+1-b){
			rrep(u,x+1-a){
				chmax(d[b+v][a+u],c+d[v][u]);
			}
		}
	}
	long z=0;
	rrep(v,y+1){
		rrep(u,x+1){
			chmax(z,d[v][u]);
		}
	}
	wt1(z);
	_exit(0);
}