Compilare: user.cpp: In function ‘int main()’: user.cpp:33:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("concurs2.in","r",stdin); ^ user.cpp:34:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("concurs2.out","w",stdout); ^ user.cpp:35:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld",&n); ^ user.cpp:36:51: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (i=1;i<=n;i++) scanf("%ld%ld",&v[i],&x[i]); ^ user.cpp:41:34: warning: array subscript is below array bounds [-Warray-bounds] if (a!=v[i]) {k++;z[k][-1]=v[i];z[k][0]++;z[k][z[k][0]]=x[i];a=v[i];} ^ user.cpp:45:31: warning: array subscript is below array bounds [-Warray-bounds] for (i=1;i<=k;i++) z[i][-2]=z[i][0]; ^ user.cpp:54:73: warning: array subscript is below array bounds [-Warray-bounds] printf("%ld %ld\n",z[pozmaxim2][-1],z[pozmaxim2][z[pozmaxim2][-2]-z[pozmaxim2][0]+1]); ^ user.cpp:54:93: warning: array subscript is below array bounds [-Warray-bounds] printf("%ld %ld\n",z[pozmaxim2][-1],z[pozmaxim2][z[pozmaxim2][-2]-z[pozmaxim2][0]+1]); ^