Compilare: main.cpp:2:292: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] using namespace std;ifstream fin("monezi.in");ofstream fout("monezi.out");int n,s,v[18],sol[18],f[513],sum;void bk(int k){int val=v[k];if(k>n){for(int i=1;i<=s;i++){if(f[i]){sum++;}}}else{for(int i=val;i<=s;i++){f[i]+=f[i-val];}bk(k+1);for(int i=s;i>=val;i--){f[i]-=f[i-val];}bk(k+1);}}main(){fin>>n>>s;f[0]=1;for(int i=1;i<=n;i++){fin>>v[i];}bk(1);fout<<sum;} ^