Submission #77980

#	Time	Username	Problem	Language	Result	Execution time	Memory
77980		nxteru	Sterilizing Spray (JOI15_sterilizing)	C++14	100 / 100	776 ms	72488 KiB

sterilizing

#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <cstdio>
#include <cstring>
#include <string>
#include <math.h>
using namespace std;
typedef long long ll;
typedef double D;
typedef pair<int,int> P;
#define M 1000000007
#define F first
#define S second
#define PB push_back
#define INF 100000000000000000
struct spr{
    ll x[30];
    spr(){
        for(int i=0;i<30;i++)x[i]=0;
    }
    spr operator +(spr &q){
        spr res;
        for(int i=0;i<30;i++)res.x[i]=x[i]+q.x[i];
        return res;
    }
    void st(int a){
        for(int i=0;i<30;i++){
            if(i+a<30)x[i]=x[i+a];
            else x[i]=0;
        }
    }
    void ch(ll a,ll k){
        x[0]=a;
        for(int i=1;i<30;i++)x[i]=x[i-1]/k;
    }
};
ll n,q,k,la[1<<18];
spr seg[1<<18];
void lazy(int l,int r,int o){
    if(la[o]==0)return;
    seg[o].st(la[o]);
    if(l!=r){
        la[o*2+1]+=la[o];
        la[o*2+2]+=la[o];
    }
    la[o]=0;
}
void up(int a,int b,int l,int r,int o,ll x){
    lazy(l,r,o);
    if(r<a||b<l)return;
    if(a<=l&&r<=b){
        seg[o].ch(x,k);
        return;
    }
    up(a,b,l,(l+r-1)/2,o*2+1,x);
    up(a,b,(l+r+1)/2,r,o*2+2,x);
    seg[o]=seg[o*2+1]+seg[o*2+2];
}
void cha(int a,int b,int l,int r,int o){
    lazy(l,r,o);
    if(r<a||b<l)return;
    if(a<=l&&r<=b){
        la[o]++;
        lazy(l,r,o);
        return;
    }
    cha(a,b,l,(l+r-1)/2,o*2+1);
    cha(a,b,(l+r+1)/2,r,o*2+2);
    seg[o]=seg[o*2+1]+seg[o*2+2];
}
ll sum(int a,int b,int l,int r,int o){
    lazy(l,r,o);
    if(r<a||b<l)return 0;
    if(a<=l&&r<=b)return seg[o].x[0];
    return sum(a,b,l,(l+r-1)/2,o*2+1)+sum(a,b,(l+r+1)/2,r,o*2+2);
}
int main(void){
    scanf("%lld%lld%lld",&n,&q,&k);
    for(int i=0;i<n;i++){
        ll a;
        scanf("%lld",&a);
        up(i,i,0,(1<<17)-1,0,a);
    }
    while(q){
        ll s,a,b;
        scanf("%lld%lld%lld",&s,&a,&b);
        if(s==1){
            up(a-1,a-1,0,(1<<17)-1,0,b);
        }
        if(s==2&&k!=1){
            cha(a-1,b-1,0,(1<<17)-1,0);
        }
        if(s==3){
            printf("%lld\n",sum(a-1,b-1,0,(1<<17)-1,0));
        }
        q--;
    }
}

Compilation message (stderr)

sterilizing.cpp: In function 'int main()':
sterilizing.cpp:83:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld%lld%lld",&n,&q,&k);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
sterilizing.cpp:86:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&a);
         ~~~~~^~~~~~~~~~~
sterilizing.cpp:91:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%lld%lld",&s,&a,&b);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 75 / 75