Compilare: user.cpp: In function ‘long long int zalgorithm(long long int, long long int, long long int)’: user.cpp:32:4: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (i>ok+1) ^ user.cpp:36:25: warning: no return statement in function returning non-void [-Wreturn-type] oki[1][n-(i-ok-1)+1]=1;}} ^ user.cpp: In function ‘int main()’: user.cpp:38:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv10.in","r",stdin); ^ user.cpp:39:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv10.out","w",stdout); ^ user.cpp:41:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld\n",&t); ^ user.cpp:45:11: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(ch+1); ^ user.cpp:47:12: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n"); ^ user.cpp:48:11: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(st+1); ^ user.cpp:50:12: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n"); ^ user.cpp:51:11: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(dr+1); ^ /tmp/ccpzzevr.o: In function `main': user.cpp:(.text.startup+0xbb): warning: the `gets' function is dangerous and should not be used.