Compilare: main.cpp: In function 'int main()': main.cpp:133:43: warning: narrowing conversion of '(((1ll * ((long long int)x)) * ((long long int)cnt.std::vector<_Tp, _Alloc>::operator[]<int, std::allocator<int> >(((std::vector<int>::size_type)i)))) % 1000000007ll)' from 'long long int' to 'int' inside { } [-Wnarrowing] cur = {len[i], (1LL * x * cnt[i]) % MOD, (1LL * y * cnt[i]) % MOD, cnt[i], (dp[i] + 1LL * prd * cnt[i]) % MOD}; ~~~~~~~~~~~~~~~~~~~^~~~~ main.cpp:133:69: warning: narrowing conversion of '(((1ll * ((long long int)y)) * ((long long int)cnt.std::vector<_Tp, _Alloc>::operator[]<int, std::allocator<int> >(((std::vector<int>::size_type)i)))) % 1000000007ll)' from 'long long int' to 'int' inside { } [-Wnarrowing] cur = {len[i], (1LL * x * cnt[i]) % MOD, (1LL * y * cnt[i]) % MOD, cnt[i], (dp[i] + 1LL * prd * cnt[i]) % MOD}; ~~~~~~~~~~~~~~~~~~~^~~~~ main.cpp:133:113: warning: narrowing conversion of '((((long long int)dp.std::vector<_Tp, _Alloc>::operator[]<int, std::allocator<int> >(((std::vector<int>::size_type)i))) + ((1ll * ((long long int)prd)) * ((long long int)cnt.std::vector<_Tp, _Alloc>::operator[]<int, std::allocator<int> >(((std::vector<int>::size_type)i))))) % 1000000007ll)' from 'long long int' to 'int' inside { } [-Wnarrowing] cur = {len[i], (1LL * x * cnt[i]) % MOD, (1LL * y * cnt[i]) % MOD, cnt[i], (dp[i] + 1LL * prd * cnt[i]) % MOD}; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~ main.cpp: In function 'char nextch()': main.cpp:15:34: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buf, 1, MAXBUF, fi); ^