Compilare: main.cpp: In function 'void ReadInput()': main.cpp:15:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:17:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ main.cpp: In function 'void ConstructSubString()': main.cpp:47:33: warning: 'sol' may be used uninitialized in this function [-Wmaybe-uninitialized] prev[i] = index[sol - 1]; ~~~~^~~