Created
May 27, 2014 11:22
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#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <math.h> | |
#include <ctype.h> | |
int main(int argc, char const *argv[]) | |
{ | |
int i,testc,n,nby3,nby5,pint; | |
scanf("%d", &testc); | |
while(testc--) | |
{ | |
scanf("%d", &n); | |
if (n<3) | |
{ | |
printf("-1\n"); | |
continue; | |
} | |
nby5=n%5; | |
if (nby5==0) | |
{ | |
pint=(n>=15)?1:0; | |
if (pint) | |
while(n>=15) | |
{ | |
printf("555555555555555"); | |
n-=15; | |
} | |
for (i = 0; i < n; ++i) | |
printf("3"); | |
printf("\n"); | |
} | |
else if (nby5==1) | |
{ | |
if (n-6<0) | |
{ | |
printf("-1\n"); | |
continue; | |
} | |
pint=(n-6)>=15?1:0; | |
if (pint) | |
while(n-6>=15) | |
{ | |
printf("555555555555555"); | |
n-=15; | |
} | |
printf("555555"); | |
for (i = 0; i < n-6; ++i) | |
printf("3"); | |
printf("\n"); | |
} | |
else if (nby5==2) | |
{ | |
if (n-12<0) | |
{ | |
printf("-1\n"); | |
continue; | |
} | |
pint=(n-12)>=15?1:0; | |
if (pint) | |
while(n-12>=15) | |
{ | |
printf("555555555555555"); | |
n-=15; | |
} | |
printf("555555555555"); | |
for (i = 0; i < n-12; ++i) | |
printf("3"); | |
printf("\n"); | |
} | |
else if (nby5==3) | |
{ | |
if (n-3<0) | |
{ | |
printf("-1\n"); | |
continue; | |
} | |
pint=(n-3)>=15?1:0; | |
if (pint) | |
while(n-3>=15) | |
{ | |
printf("555555555555555"); | |
n-=15; | |
} | |
printf("555"); | |
for (i = 0; i < n-3; ++i) | |
printf("3"); | |
printf("\n"); | |
} | |
else if (nby5==4) | |
{ | |
if (n-9<0) | |
{ | |
printf("-1\n"); | |
continue; | |
} | |
pint=(n-9)>=15?1:0; | |
if (pint) | |
while(n-9>=15) | |
{ | |
printf("555555555555555"); | |
n-=15; | |
} | |
printf("555555555"); | |
for (i = 0; i < n-9; ++i) | |
printf("3"); | |
printf("\n"); | |
} | |
} | |
return 0; | |
} |
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