Compilare: main.cpp: In function 'int main()': main.cpp:31:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (rasp[i].size() + i == n) ~~~~~~~~~~~~~~~~~~~^~~~ main.cpp:33:36: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n", rasp[i].size()); ^ main.cpp:35:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < rasp[i].size(); ++j) ~~^~~~~~~~~~~~~~~~ main.cpp:16:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mincinosi.in", "r", stdin); ^ main.cpp:17:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mincinosi.out", "w", stdout); ^ main.cpp:20:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:25:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^