Compilare: main.cpp: In function 'int main()': main.cpp:19:42: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d %d",&n,&m,&s,&f); ^ main.cpp:20:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a[1]); ^ main.cpp:22:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a[i]); ^ main.cpp:26:50: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&bomb[i][0],&bomb[i][1]); ^ main.cpp:39:24: warning: 'psmin' may be used uninitialized in this function [-Wmaybe-uninitialized] int smin=INT_MAX,psmin; ^~~~~