Submission #77231

#	Time	Username	Problem	Language	Result	Execution time	Memory
77231		farukkastamonuda	Untitled (POI11_tem)	C++14	40 / 100	354 ms	33792 KiB

Main

#include <bits/stdc++.h>
using namespace std;
int n,s[1000000],e[1000000],x[1000000],v[1000000],mn,c[1000000],ans,ds,de;
int main(){
    scanf("%d",&n);
    for(int i=0;i<n;i++){
        scanf("%d%d",s+i,e+i);
    }
    ds=de=n;
    for(int i=0;i<n;i++){
        int cmn=i;
        while(ds<de && s[x[ds]]<s[i]){
            cmn=min(cmn,v[x[ds]]);
            c[v[x[ds]]]=0;
            ds++;
        }
        c[cmn]=1;
        while(ds<de && s[x[de-1]]>e[i]){
            de--;
            c[v[x[de]]]=0;
            while(!c[mn]) mn++;
        }
        x[--ds]=i;
        v[i]=cmn;
        ans=max(ans,i-mn+1);
    }
    printf("%d\n",ans);

    return 0;
}

Compilation message (stderr)

tem.cpp: In function 'int main()':
tem.cpp:5:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
tem.cpp:7:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",s+i,e+i);
         ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 8 / 8
• Subtask 3: 8 / 8
• Subtask 4: 8 / 8
• Subtask 5: 8 / 8
• Subtask 6: 0 / 8
• Subtask 7: 0 / 8
• Subtask 8: 0 / 8
• Subtask 9: 0 / 9
• Subtask 10: 0 / 9
• Subtask 11: 0 / 9
• Subtask 12: 0 / 9