Compilare: main.cpp: In function 'int main()': main.cpp:32:27: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<std::vector<std::pair<int, int> > >::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n",a.size()); ^ main.cpp:34:30: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<std::pair<int, int> >::size_type {aka long unsigned int}' [-Wformat=] printf("%d ",t.size()); ^ main.cpp:10:83: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cinema.in","r",stdin),freopen("cinema.out","w",stdout),scanf("%d",&n); ^ main.cpp:10:83: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:10:83: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:12:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",v+i); ^