Compilare: main.cpp: In function 'int main()': main.cpp:7:93: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] priority_queue <int , vector<int>, greater <int> >p;int main(){freopen("proc2.in","r",stdin);freopen("proc2.out","w",stdout);int n,m,ts,tf,d;scanf("%d%d",&n,&m);for(int i=1;i<=n;i++)p.push(i);for(int i=1;i<=m;i++){scanf("%d%d",&ts,&d);tf=ts+d;while(!q.empty() && q.top().first<=ts){p.push(q.top().second);q.pop();}printf("%d\n",p.top());q.push(make_pair(tf,p.top()));p.pop();} ^ main.cpp:7:125: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] priority_queue <int , vector<int>, greater <int> >p;int main(){freopen("proc2.in","r",stdin);freopen("proc2.out","w",stdout);int n,m,ts,tf,d;scanf("%d%d",&n,&m);for(int i=1;i<=n;i++)p.push(i);for(int i=1;i<=m;i++){scanf("%d%d",&ts,&d);tf=ts+d;while(!q.empty() && q.top().first<=ts){p.push(q.top().second);q.pop();}printf("%d\n",p.top());q.push(make_pair(tf,p.top()));p.pop();} ^ main.cpp:7:161: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] priority_queue <int , vector<int>, greater <int> >p;int main(){freopen("proc2.in","r",stdin);freopen("proc2.out","w",stdout);int n,m,ts,tf,d;scanf("%d%d",&n,&m);for(int i=1;i<=n;i++)p.push(i);for(int i=1;i<=m;i++){scanf("%d%d",&ts,&d);tf=ts+d;while(!q.empty() && q.top().first<=ts){p.push(q.top().second);q.pop();}printf("%d\n",p.top());q.push(make_pair(tf,p.top()));p.pop();} ^ main.cpp:7:235: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] priority_queue <int , vector<int>, greater <int> >p;int main(){freopen("proc2.in","r",stdin);freopen("proc2.out","w",stdout);int n,m,ts,tf,d;scanf("%d%d",&n,&m);for(int i=1;i<=n;i++)p.push(i);for(int i=1;i<=m;i++){scanf("%d%d",&ts,&d);tf=ts+d;while(!q.empty() && q.top().first<=ts){p.push(q.top().second);q.pop();}printf("%d\n",p.top());q.push(make_pair(tf,p.top()));p.pop();} ^