Compilare: user.cpp: In function ‘int main()’: user.cpp:144:80: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘int*’ [-Wformat=] for(int i = 1; i <= n; i++) printf("%d %d\n", &ans[i].first, &ans[i].second); ^ user.cpp:144:80: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘int*’ [-Wformat=] user.cpp:99:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("egal.in", "r", stdin); ^ user.cpp:100:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("egal.out", "w", stdout); ^ user.cpp: In function ‘void Read(int&)’: user.cpp:17:42: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(Buffer, 1, BMax, stdin); ^ user.cpp:25:42: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(Buffer, 1, BMax, stdin); ^