Compilare: main.cpp: In member function 'void MaxSegmentTree::update(int, int, int, int, int)': main.cpp:155:38: warning: statement has no effect [-Wunused-value] debug(23,nod,st,dr,pos,val,n); ^ main.cpp: In constructor 'MaxSegmentTree::MaxSegmentTree(const std::vector<int>&)': main.cpp:212:22: warning: statement has no effect [-Wunused-value] debug(1111,n); ^ main.cpp:215:22: warning: statement has no effect [-Wunused-value] debug(1112,n); ^ main.cpp: In member function 'void MaxSegmentTree::set(int, int)': main.cpp:219:22: warning: statement has no effect [-Wunused-value] debug(1113,n); ^ main.cpp:221:22: warning: statement has no effect [-Wunused-value] debug(1114,n); ^ main.cpp: In function 'int main()': main.cpp:296:46: warning: statement has no effect [-Wunused-value] debug(lvl[1],lvl[2],lvl[3],lvl[4],lvl[5]); ^ main.cpp:306:23: warning: statement has no effect [-Wunused-value] debug(t,a); ^ main.cpp:339:48: warning: statement has no effect [-Wunused-value] debug(range.first,range.second); ^ main.cpp:357:25: warning: statement has no effect [-Wunused-value] debug(t,a,b); ^ main.cpp:255:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&k); ^ main.cpp:260:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&val); ^ main.cpp:304:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld",&a); ^ main.cpp:354:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld %lld",&a,&b); ^