oj.uz

Submission #307711

# Submission time Handle Problem Language Result Execution time Memory
307711 2020-09-29T07:36:59 Z ansol4328 Pyramid Base (IOI08_pyramid_base) C++14
70 / 100
 5000 ms 43072 KB 
#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<int,int> P;
const ll INF=1e18;

struct SegTree{
    vector<ll> tree, lazy;
    int base;
    SegTree(int a){
        base=1;
        while(base<a) base<<=1;
        tree.resize(base*2+2);
        lazy.resize(base*2+2);
        for(int i=base+a ; i<base*2 ; i++) tree[i]=INF;
        for(int i=base-1 ; i>=1 ; i--) tree[i]=min(tree[i*2],tree[i*2+1]);
        base--;
    }
    void propagate(int ns, int nf, int num){
        if(lazy[num]!=0){
            if(ns<nf){
                lazy[num*2]+=lazy[num];
                lazy[num*2+1]+=lazy[num];
            }
            tree[num]+=lazy[num];
            lazy[num]=0;
        }
    }
    ll query(int ns=1, int nf=-1, int num=1){
        if(nf==-1) nf=base+1;
        propagate(ns,nf,num);
        return tree[num];
    }
    void add_value(ll val, int st, int fn, int ns=1, int nf=-1, int num=1){
        if(nf==-1) nf=base+1;
        propagate(ns,nf,num);
        if(ns>fn || nf<st) return;
        if(st<=ns && nf<=fn){
            lazy[num]+=val;
            propagate(ns,nf,num);
            return;
        }
        int mid=(ns+nf)>>1;
        add_value(val,st,fn,ns,mid,num*2);
        add_value(val,st,fn,mid+1,nf,num*2+1);
        tree[num]=min(tree[num*2],tree[num*2+1]);
    }
};

struct A{
    int x1, y1, x2, y2, c;
    A(){}
    A(int t1, int t2, int t3, int t4, int t5) : x1(t1), y1(t2), x2(t3), y2(t4), c(t5) {}
};

bool cmp(const A &lhs, const A &rhs){
    return lhs.y1==rhs.y1 ? lhs.y2<rhs.y2 : lhs.y1<rhs.y1;
}

int m, n, p;
ll b;
A ob[400005];

bool pos(int w)
{
    SegTree T(m-w+1);
    priority_queue<P,vector<P>,greater<P> > PQ;
    int idx=1, st, fn, k;
    for(int sy=1, fy=w ; fy<=n ; sy++, fy++){
        while(!PQ.empty() && PQ.top().first<sy){
            k=PQ.top().second; PQ.pop();
            st=max(1,ob[k].x1-w+1);
            fn=min(m-w+1,ob[k].x2);
            T.add_value(-ob[k].c,st,fn);
        }
        while(idx<=p && ob[idx].y1>=sy && ob[idx].y1<=fy){
            st=max(1,ob[idx].x1-w+1);
            fn=min(m-w+1,ob[idx].x2);
            T.add_value(ob[idx].c,st,fn);
            PQ.push(P(ob[idx].y2,idx));
            idx++;
        }
        if(T.query()<=b) return true;
    }
    return false;
}

int main()
{
    scanf("%d %d",&m,&n);
    scanf("%lld",&b);
    scanf("%d",&p);
    for(int i=1 ; i<=p ; i++){
        scanf("%d %d %d %d %d",&ob[i].x1,&ob[i].y1,&ob[i].x2,&ob[i].y2,&ob[i].c);
    }
    sort(ob+1,ob+1+p,cmp);
    int st=1, fn=min(m,n), mid, ans=0;
    while(st<=fn){
        mid=(st+fn)>>1;
        if(pos(mid)) st=mid+1, ans=mid;
        else fn=mid-1;
    }
    printf("%d",ans);
    return 0;
}

Compilation message

pyramid_base.cpp: In function 'int main()':
pyramid_base.cpp:91:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   91 |     scanf("%d %d",&m,&n);
      |     ~~~~~^~~~~~~~~~~~~~~
pyramid_base.cpp:92:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   92 |     scanf("%lld",&b);
      |     ~~~~~^~~~~~~~~~~
pyramid_base.cpp:93:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   93 |     scanf("%d",&p);
      |     ~~~~~^~~~~~~~~
pyramid_base.cpp:95:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   95 |         scanf("%d %d %d %d %d",&ob[i].x1,&ob[i].y1,&ob[i].x2,&ob[i].y2,&ob[i].c);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 1012 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 4576 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 16760 KB Output is correct
2 Correct 538 ms 33640 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 544 ms 33336 KB Output is correct
2 Correct 247 ms 16900 KB Output is correct

Subtask #8
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 768 KB Output is correct
2 Correct 54 ms 1080 KB Output is correct
3 Correct 69 ms 1100 KB Output is correct

Subtask #9
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 258 ms 4880 KB Output is correct
2 Correct 541 ms 5000 KB Output is correct
3 Correct 445 ms 5012 KB Output is correct

Subtask #10
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 572 ms 17424 KB Output is correct
2 Correct 428 ms 34172 KB Output is correct
3 Correct 30 ms 956 KB Output is correct
4 Correct 1642 ms 33984 KB Output is correct

Subtask #11
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 934 ms 33912 KB Output is correct
2 Correct 1958 ms 34240 KB Output is correct
3 Correct 509 ms 18912 KB Output is correct

Subtask #12
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 758 ms 17860 KB Output is correct
2 Correct 2588 ms 34308 KB Output is correct
3 Correct 2318 ms 35368 KB Output is correct
4 Correct 2523 ms 35232 KB Output is correct
5 Correct 2356 ms 35368 KB Output is correct
6 Correct 244 ms 18680 KB Output is correct

Subtask #13
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5044 ms 38232 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #14
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5036 ms 40852 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #15
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5047 ms 43072 KB Time limit exceeded
2 Halted 0 ms 0 KB -