Compilare: main.cpp: In function 'void solve()': main.cpp:84:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 1; j < p2[i].size(); ++j) { ~~^~~~~~~~~~~~~~ main.cpp:89:93: warning: narrowing conversion of '(((1ull * ((long long unsigned int)p2[i].std::vector<_Tp, _Alloc>::operator[]<Interval, std::allocator<Interval> >(((std::vector<Interval>::size_type)(j - 1))).Interval::z)) * ((long long unsigned int)p2[i].std::vector<_Tp, _Alloc>::operator[]<Interval, std::allocator<Interval> >(((std::vector<Interval>::size_type)j)).Interval::z)) % 4294967296ull)' from 'long long unsigned int' to 'long long int' inside { } [-Wnarrowing] p2[i + 1].push_back({p2[i][j - 1].x, p2[i][j].y, 1LLU * p2[i][j - 1].z * p2[i][j].z % MOD}); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~ main.cpp:50:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:52:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &v[i].x, &v[i].y); ^ main.cpp:53:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &v[i].z); ^ main.cpp: In function 'int main()': main.cpp:97:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("aliniate.in", "r", stdin); ^ main.cpp:98:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("aliniate.out", "w", stdout); ^ main.cpp:101:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^