oj.uz

Submission #35661

# Submission time Handle Problem Language Result Execution time Memory
35661 2017-11-27T08:56:03 Z dqhungdl Simple game (IZhO17_game) C++14
100 / 100
 469 ms 33656 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAX=1e6;
int n,T,a[100005],tree[4000005],lazy[4000005];

void Down(int k)
{
    tree[2*k]+=lazy[k];
    lazy[2*k]+=lazy[k];
    tree[2*k+1]+=lazy[k];
    lazy[2*k+1]+=lazy[k];
    lazy[k]=0;
}

void Update(int k,int l,int r,int L,int R,int val)
{
    if(l>R||L>r)
        return;
    if(L<=l&&r<=R)
    {
        tree[k]+=val;
        lazy[k]+=val;
        return;
    }
    Down(k);
    int mid=(l+r)/2;
    Update(2*k,l,mid,L,R,val);
    Update(2*k+1,mid+1,r,L,R,val);
}

int Query(int k,int l,int r,int pos)
{
    if(l==r)
        return tree[k];
    Down(k);
    int mid=(l+r)/2;
    if(pos<=mid)
        return Query(2*k,l,mid,pos);
    return Query(2*k+1,mid+1,r,pos);
}

int main()
{
    //freopen("TEST.INP","r",stdin);
    scanf("%d%d",&n,&T);
    for(int i=1;i<=n;i++)
        scanf("%d",&a[i]);
    for(int i=2;i<=n;i++)
        Update(1,1,MAX,min(a[i-1],a[i]),max(a[i-1],a[i]),1);
    for(int i=2;i<n;i++)
        Update(1,1,MAX,a[i],a[i],-1);
    int type,pos,val;
    while(T--)
    {
        scanf("%d",&type);
        if(type==1)
        {
            scanf("%d%d",&pos,&val);
            if(pos>1)
                Update(1,1,MAX,min(a[pos-1],a[pos]),max(a[pos-1],a[pos]),-1);
            if(pos<n)
                Update(1,1,MAX,min(a[pos],a[pos+1]),max(a[pos],a[pos+1]),-1);
            if(1<pos&&pos<n)
                Update(1,1,MAX,a[pos],a[pos],1);
            a[pos]=val;
            if(pos>1)
                Update(1,1,MAX,min(a[pos-1],a[pos]),max(a[pos-1],a[pos]),1);
            if(pos<n)
                Update(1,1,MAX,min(a[pos],a[pos+1]),max(a[pos],a[pos+1]),1);
            if(1<pos&&pos<n)
                Update(1,1,MAX,a[pos],a[pos],-1);
        }
        else
        {
            scanf("%d",&val);
            printf("%d\n",Query(1,1,MAX,val));
        }
    }
}

Compilation message

game.cpp: In function 'int main()':
game.cpp:46:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&T);
                        ^
game.cpp:48:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&a[i]);
                          ^
game.cpp:56:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&type);
                          ^
game.cpp:59:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d%d",&pos,&val);
                                    ^
game.cpp:76:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&val);
                             ^

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 33656 KB Output is correct
2 Correct 3 ms 33656 KB Output is correct
3 Correct 6 ms 33656 KB Output is correct
4 Correct 3 ms 33656 KB Output is correct
5 Correct 9 ms 33656 KB Output is correct
6 Correct 6 ms 33656 KB Output is correct
7 Correct 3 ms 33656 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 33656 KB Output is correct
2 Correct 3 ms 33656 KB Output is correct
3 Correct 6 ms 33656 KB Output is correct
4 Correct 3 ms 33656 KB Output is correct
5 Correct 9 ms 33656 KB Output is correct
6 Correct 6 ms 33656 KB Output is correct
7 Correct 3 ms 33656 KB Output is correct
8 Correct 126 ms 33656 KB Output is correct
9 Correct 289 ms 33656 KB Output is correct
10 Correct 293 ms 33656 KB Output is correct
11 Correct 109 ms 33656 KB Output is correct
12 Correct 143 ms 33656 KB Output is correct
13 Correct 123 ms 33656 KB Output is correct

Subtask #3
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 33656 KB Output is correct
2 Correct 3 ms 33656 KB Output is correct
3 Correct 6 ms 33656 KB Output is correct
4 Correct 3 ms 33656 KB Output is correct
5 Correct 9 ms 33656 KB Output is correct
6 Correct 6 ms 33656 KB Output is correct
7 Correct 3 ms 33656 KB Output is correct
8 Correct 126 ms 33656 KB Output is correct
9 Correct 289 ms 33656 KB Output is correct
10 Correct 293 ms 33656 KB Output is correct
11 Correct 109 ms 33656 KB Output is correct
12 Correct 143 ms 33656 KB Output is correct
13 Correct 123 ms 33656 KB Output is correct
14 Correct 429 ms 33656 KB Output is correct
15 Correct 423 ms 33656 KB Output is correct
16 Correct 429 ms 33656 KB Output is correct
17 Correct 469 ms 33656 KB Output is correct
18 Correct 466 ms 33656 KB Output is correct