#include <fstream.h>
#include <stdlib.h>            // for atoi()
#include <string.h>            // for strlen()

// assume output width 80 bytes
// assume no word ever longer than one output line

int
main(int argc, char *argv[])
{
 	const unsigned outlength=81;
	char outline[outlength];
	char *outptr;

 	const unsigned wordlength=81;
	char word[wordlength];
	char *wordptr;

	*(outptr=outline)=0;
	*(wordptr=word)=0;
	int wrapping=0;
	int more=1;

	while (more) {
		char c;
		cin.read(&c,1);
		if (cin.eof() || !cin.good()) more=0;

		if (!more || c == '\n') {
			// if word fits add it
			if (wordptr-word < outlength-(outptr-outline+1)) {
				strcat(outptr,word);
				outptr+=wordptr-word;
				*(wordptr=word)=0;
			}
			// purge the line regardless
			{
				cout << outline << '\n' << flush;
				*(outptr=outline)=0;
				wrapping=0; // allow spaces at line start
			}
			// if word did't fit, add it if it does now (it must)
			if (wordptr-word < outlength-(outptr-outline+1)) {
				strcat(outptr,word);
				outptr+=wordptr-word;
				*(wordptr=word)=0;
			}
			// if no more, and a line left, purge it finally
			if (!more && outptr-outline) {
				cout << outline << '\n' << flush;
			}
		}
		else if (c == ' ') {
			// cerr << "space:\n" << flush;
			// if word fits add it
			if (wordptr-word < outlength-(outptr-outline+1)) {
				// cerr << "space: adding word 1\n" << flush;
				strcat(outptr,word);
				outptr+=wordptr-word;
				*(wordptr=word)=0;
				// cerr << "space: line now=<" << outline
				//      << ">\n" << flush;
			}
			// else purge the line
			else {
				cout << outline << '\n' << flush;
				*(outptr=outline)=0;
				wrapping=1; // disallow spaces at line start
			}
			// if word did't fit, add it if it does now (it must)
			if (wordptr-word < outlength-(outptr-outline+1)) {
				// cerr << "space: adding word 2\n" << flush;
				strcat(outptr,word);
				outptr+=wordptr-word;
				*(wordptr=word)=0;
				// cerr << "space: line now=<" << outline
				//      << ">\n" << flush;
			}
			if (!wrapping || outptr-outline) {
				// cerr << "space: adding space\n" << flush;
				*outptr++=c;	// overflow ???
				*outptr=0;
			}
		}
		else {
			// if (wordptr-word >= wordlength) error;
			*wordptr++=c;
			*wordptr=0;
			// cerr << "char: word=<" << word << ">\n" << flush;
		}
	}
	return 0;
}