Compilare: main.cpp: In function 'int32_t main()': main.cpp:74:15: warning: unused variable 'k' [-Wunused-variable] long long k,x; ^ main.cpp:74:17: warning: unused variable 'x' [-Wunused-variable] long long k,x; ^ main.cpp:72:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("parcele1.in","r",stdin); ^ main.cpp:73:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("parcele1.out","w",stdout); ^ main.cpp:75:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld ",&n,&m); ^ main.cpp:76:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&p); ^ main.cpp:81:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&mat[i][j]); ^