Submission #155254

#	Time	Username	Problem	Language	Result	Execution time	Memory
155254		GoldNextYear	Deda (COCI17_deda)	C++14	80 / 140	1090 ms	3388 KiB

deda

#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#include <bits/stdc++.h>
using namespace std;
#define sqr 340
#define mid (l+r)/2
#define pb push_back
#define pob pop_back
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define ins insert
#define era erase
#define C continue
#define mem(dp,i) memset(dp,i,sizeof(dp))
#define mset multiset
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;
const ll mod=1000000007;
const ll inf=1e18*4;
const ld pai=acos(-1);
int n,q;
int tree[800009];
void build(int node,int l,int r){
        if(l==r){
                tree[node]=1e9*2;//change it to inf
                return;
        }
        build(node*2,l,mid);
        build(node*2+1,mid+1,r);
        tree[node]=min(tree[node*2],tree[node*2+1]);
}
int query(int node,int l,int r,int s,int e){
        if(s<=l && e>=r)return tree[node];
        if(s<=mid && e>=mid+1)return min(query(node*2,l,mid,s,e),query(node*2+1,mid+1,r,s,e));
        else if(s<=mid)return query(node*2,l,mid,s,e);
        else return query(node*2+1,mid+1,r,s,e);
}
void upd(int node,int l,int r,int k,int val){
        if(l==r){
                tree[node]=val;
                return;
        }
        if(k<=mid)upd(node*2,l,mid,k,val);
        else upd(node*2+1,mid+1,r,k,val);
        tree[node]=min(tree[node*2],tree[node*2+1]);
}
int bin(int L,int x){
        int l=L-1,r=n;
        while(r-l>1){
                int m=(l+r)/2;
                if(query(1,0,n-1,L,m)<=x)r=m;
                else l=m;
        }
        if(r==n)return -1;
        return r+1;
}
int main(){
  		scanf("%d%d",&n,&q);
        build(1,0,n-1);
        while(q--){
                char t;cin>>t;
                if(t=='M'){
                        int id,val;
                  		scanf("%d%d",&val,&id);
                        id--;
                        upd(1,0,n-1,id,val);
                }
                else{
                        int l,x;
                  		scanf("%d%d",&x,&l);
                        l--;
                        printf("%d\n",bin(l,x));
                }
        }
}

Compilation message (stderr)

deda.cpp: In function 'int main()':
deda.cpp:65:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&q);
     ~~~~~^~~~~~~~~~~~~~
deda.cpp:71:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                     scanf("%d%d",&val,&id);
                     ~~~~~^~~~~~~~~~~~~~~~~
deda.cpp:77:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                     scanf("%d%d",&x,&l);
                     ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 80 / 140