Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 1 | #import<fstream> | ^~~~~~ main.cpp: In function 'int u()': main.cpp:2:67: warning: no return statement in function returning non-void [-Wreturn-type] 2 | int f[26969];int n,i,m,c,a,j;int u(){for(j=i;j<=n;j+=j&-j)f[j]+=a;}int s(int i){int s=0;for(;i>0;i-=i&-i)s+=f[i];return s;}main(){std::ifstream f("datorii.in");std::ofstream g("datorii.out");f>>n>>m;for(i=1;i<=n;i++){f>>a;u();}while(m--){f>>c>>i>>a;if(c)g<<s(a)-s(i-1)<<'\n';else a=-a,u();}} | ^ main.cpp: At global scope: main.cpp:2:124: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 2 | int f[26969];int n,i,m,c,a,j;int u(){for(j=i;j<=n;j+=j&-j)f[j]+=a;}int s(int i){int s=0;for(;i>0;i-=i&-i)s+=f[i];return s;}main(){std::ifstream f("datorii.in");std::ofstream g("datorii.out");f>>n>>m;for(i=1;i<=n;i++){f>>a;u();}while(m--){f>>c>>i>>a;if(c)g<<s(a)-s(i-1)<<'\n';else a=-a,u();}} | ^~~~