../programs/61923.cpp: In function 'int main()':
../programs/61923.cpp:130: warning: comparison between signed and unsigned integer expressions
../programs/61923.cpp:134: error: expected primary-expression before '{' token
../programs/61923.cpp:135: error: expected primary-expression before '{' token
../programs/61923.cpp:149: error: expected primary-expression before '{' token
../programs/61923.cpp:152: warning: comparison between signed and unsigned integer expressions
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