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180.c
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/*
Solution for the problem 180 of aceptaelreto.com
- Triangulos -
Copyright (C) 2017 hnko
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
void swap(long long* a, long long* b){
long long temp=*a;
*a=*b;
*b=temp;
}
int main(int argc, char const *argv[])
{
long long t, a, b, c, i, j;
long long tabla[3];
scanf("%lld", &t);
while(t--){
scanf("%lld %lld %lld", &tabla[0], &tabla[1], &tabla[2]);
/* bublesort */
for(i=0; i<3;i++){
for(j=0; j<2-i; j++){
if(tabla[j]>tabla[j+1]){
swap(&tabla[j], &tabla[j+1]);
}
}
}
/*
a^2+b^2 > c^2 ->acutangulo
a^2+b^2 < c^2 ->obtusangulo
a^2+b^2 = c^2 -> rectangulo
si a+b<=c ->imposible
*/
if(tabla[2]>=tabla[0]+tabla[1]){
printf("IMPOSIBLE\n");
}else if(tabla[2]*tabla[2] == tabla[0]*tabla[0]+ tabla[1]*tabla[1]){
printf("RECTANGULO\n");
}else if(tabla[2]*tabla[2] > tabla[0]*tabla[0]+ tabla[1]*tabla[1]){
printf("OBTUSANGULO\n");
}else{
printf("ACUTANGULO\n");
}
}
return 0;
}