#include <stdio.h>
#include <string.h>
#define COLS 50
#define ROWS 6
int main(void)
{
char cities[ROWS][COLS];
int i = 0, bigger_size = 0, var_count = 0;
while(scanf("%49s", cities
[i
]) == 1 && i
< ROWS
){ if (strlen(cities
[i
]) > bigger_size
){ bigger_size
= strlen(cities
[i
]); var_count = i;
}
i++;
}
printf("%s", cities
[var_count
]);
return 0;
}
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