Compilare: user.cpp: In member function ‘void arborel::update(int, int)’: user.cpp:23:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(; p<v.size(); p+=(p&(-p)) ) v[p] += add; ^ user.cpp: In function ‘void build(int, int, int)’: user.cpp:65:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while( i1<a[Left].v.size() && i2<a[Right].v.size() ) ^ user.cpp:65:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while( i1<a[Left].v.size() && i2<a[Right].v.size() ) ^ user.cpp:71:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while( i1<a[Left].v.size() ) a[node].v.push_back(a[Left].v[i1++]); ^ user.cpp:72:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while( i2<a[Right].v.size() ) a[node].v.push_back(a[Right].v[i2++]); ^ user.cpp:74:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i1=0; i1<a[node].v.size(); ++i1) aib[node].v.push_back(0); ^ user.cpp:75:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i1=1; i1<aib[node].v.size(); ++i1) ^ user.cpp:79:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i2<aib[node].v.size()) aib[node].v[i2] += aib[node].v[i1]; ^ user.cpp: In function ‘int main()’: user.cpp:117:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mess.in", "r", stdin); ^ user.cpp:118:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mess.out", "w", stdout); ^ user.cpp:120:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:123:75: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1; i<=n; ++i) scanf("%d", &init[i]), valeur.v.push_back(init[i]); ^ user.cpp:130:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &tip); ^ user.cpp:133:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ user.cpp:138:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &k); ^