Compilare: main.cpp: In function 'int main()': main.cpp:11:38: warning: format '%s' expects argument of type 'char*', but argument 5 has type 'char (*)[1000001]' [-Wformat=] scanf ("%d %d %d\n%s",&n,&m,&l,&a); ^ main.cpp:41:23: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[21]' [-Wformat=] scanf ("%s",&b); ^ main.cpp:7:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("dinti.in","r",stdin); ^ main.cpp:8:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("dinti.out","w",stdout); ^ main.cpp:11:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d\n%s",&n,&m,&l,&a); ^ main.cpp:41:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%s",&b); ^