Compilare: main.cpp: In function 'int main()': main.cpp:49:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("concurs.in","r",stdin); ^ main.cpp:50:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("concurs.out","w",stdout); ^ main.cpp:52:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:54:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &val[i]); ^ main.cpp:56:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x,&y); ^ main.cpp:69:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x,&y); ^ main.cpp:72:68: warning: 'ymax' may be used uninitialized in this function [-Wmaybe-uninitialized] if(lc>rmax || (lc==rmax && x<xmax) || (lc==rmax && xmax==x && y<ymax)){ ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp:72:57: warning: 'xmax' may be used uninitialized in this function [-Wmaybe-uninitialized] if(lc>rmax || (lc==rmax && x<xmax) || (lc==rmax && xmax==x && y<ymax)){ ~~~~~~~~~^~~~~~~~~~