Compilare: main.cpp: In function 'int main()': main.cpp:37:24: warning: self-comparison always evaluates to true [-Wtautological-compare] ok=(sumxor^v[i]<=v[i]); ~~~~^~~~~~ main.cpp:37:24: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses] main.cpp:11:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen( "nim.in", "r", stdin ); ^ main.cpp:12:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen( "nim.out", "w", stdout ); ^ main.cpp:16:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &t ); ^ main.cpp:22:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &n ); ^ main.cpp:26:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &v[i] ); ^