View Compilation Error

0_0_5469800_18035.cpp: In function `int main()':
0_0_5469800_18035.cpp:21: error: `le' undeclared (first use this function)
0_0_5469800_18035.cpp:21: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5469800_18035.cpp:21: error: expected `)' at end of input
0_0_5469800_18035.cpp:21: error: expected primary-expression at end of input
0_0_5469800_18035.cpp:21: error: expected `;' at end of input
0_0_5469800_18035.cpp:21: error: expected `}' at end of input
0_0_5469800_18035.cpp:21: error: expected `}' at end of input