View Compilation Error

0_0_30005092_31400.cpp: In function 'int main()':
0_0_30005092_31400.cpp:80:9: error: 'ri' was not declared in this scope
         ri=1;
         ^
0_0_30005092_31400.cpp:82:18: error: 'inf' was not declared in this scope
         int res=-inf;
                  ^