180-N不最大也不最小最小X，最大X+24
N=X+X+24
X<180-2X-24<X+24
3X<156 X<52 3X>132 X>44
112<N=2X+24<128
180-N最大时 最小180-N-24 另一角=2N-156
156-N<=2N-156<=180-N
3N>=312 N>=104 3N<=336 N<=112 104<=N<=112
180-N最小时 最大180-N+24 另一角2N-204
180-N<=2N-204<=204-N
3N>=384 N>=128 3N<=408 N<=136 128<=N<=136
综上得104<=N<=136
N=X+X+24
X<180-2X-24<X+24
3X<156 X<52 3X>132 X>44
112<N=2X+24<128
180-N最大时 最小180-N-24 另一角=2N-156
156-N<=2N-156<=180-N
3N>=312 N>=104 3N<=336 N<=112 104<=N<=112
180-N最小时 最大180-N+24 另一角2N-204
180-N<=2N-204<=204-N
3N>=384 N>=128 3N<=408 N<=136 128<=N<=136
综上得104<=N<=136
