Compilare: main.cpp: In function 'int main()': main.cpp:9:19: warning: unused variable 'max1' [-Wunused-variable] int n,m,q,i,j,max1,x,j1,k,vm=1000002,val; ^~~~ main.cpp:9:26: warning: unused variable 'j1' [-Wunused-variable] int n,m,q,i,j,max1,x,j1,k,vm=1000002,val; ^~ main.cpp:10:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rosiimici.in","r",stdin); ^ main.cpp:11:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rosiimici.out","w",stdout); ^ main.cpp:12:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &m, &q); ^ main.cpp:15:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &mat[i][j]); ^ main.cpp:26:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^