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

char*mmap();
#define rd(v) int v=0;{int _c;while(_c=*rp++-48,_c>=0)v=v*10+_c;}

char wbuf[1<<28];

a[10002][26];

main(){
	char*rp=mmap(0l,1l<<28,1,2,0,0ll);
	char*wp=wbuf;

	rd(n);
	rd(q);
	for(int i=0;i<n;++i){
		for(int j=0;j<26;++j){
			a[i+1][j]=a[i][j];
		}
		int c=*rp++-'a';
		a[i+1][c]+=1;
	}
	++rp;
	while(q--){
		rd(l); --l;
		rd(r);
		rd(x);
		int c=0;
		while(x>0){
			x-=a[r][c]-a[l][c];
			++c;
		}
		*wp++=c-1+'a';
		*wp++=10;
	}
	write(1,wbuf,wp-wbuf);
	_exit(0);
}