Compilare: user.cpp: In function ‘int cautbin(int)’: user.cpp:37:11: warning: left operand of comma operator has no effect [-Wunused-value] for(i,lg;lg>0; lg>>=1) ^ user.cpp:37:13: warning: right operand of comma operator has no effect [-Wunused-value] for(i,lg;lg>0; lg>>=1) ^ user.cpp: In function ‘int main()’: user.cpp:46:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("livada3.in", "r", stdin); ^ user.cpp:47:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("livada3.out", "w", stdout); ^ user.cpp:49:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld %lld %lld", &n, &m, &c, &r); ^ user.cpp:50:58: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld %lld %lld %lld", &x, &y, &z, &w, &u); ^ user.cpp:53:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld ", &a[1][j]); ^ user.cpp:55:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld ", &a[i][1]); ^