Compilare: main.cpp: In function 'Interval join(const Interval&, const Interval&)': main.cpp:54:47: warning: narrowing conversion of '((((((long long int)((int)left.Interval::hs)) * 1ll) * ((long long int)power[((int)right.Interval::lg)])) + ((long long int)((int)right.Interval::hs))) % 1000000007ll)' from 'long long int' to 'int' inside { } [-Wnarrowing] (left.hs*1LL*power[right.lg]+right.hs)%mod, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~ main.cpp: In function 'int main()': main.cpp:108:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("diez.in", "r",stdin); ^ main.cpp:109:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("diez.out", "w",stdout); ^ main.cpp:112:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n", &n, &m); ^ main.cpp:117:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%c", &c); ^ main.cpp:124:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &que[i].tip); ^ main.cpp:126:53: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %c\n", &que[i].lg, &que[i].ch); ^ main.cpp:134:66: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d\n", &que[i].q1, &que[i].q2, &que[i].lg); ^ main.cpp: In function 'int bs1(int, int, int, int)': main.cpp:105:12: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] return last; ^~~~