Compilare: main.cpp: In function 'int main()': main.cpp:209:16: warning: unused variable 'u' [-Wunused-variable] int ct = 0,u,z; ^ main.cpp:209:18: warning: unused variable 'z' [-Wunused-variable] int ct = 0,u,z; ^ main.cpp:205:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bile.in","r",stdin); ^ main.cpp:207:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bile.out","w",stdout); ^ main.cpp:213:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:219:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&temp.x,&temp.y); ^