0_0_30505279_26324.cpp:14:7: error: 'inf' does not name a type const inf inf = 0x3f3f3f3f; ^ 0_0_30505279_26324.cpp: In function 'int main()': 0_0_30505279_26324.cpp:50:21: error: 'inf' was not declared in this scope n = rd(), ans = inf; ^