Submission #1232976

#	Time	Username	Problem	Language	Result	Execution time	Memory
1232976		TadijaSebez	Dungeon 3 (JOI21_ho_t5)	C++20	11 / 100	4094 ms	2020 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ll long long

const int N=200050;
int a[N],b[N];
int main(){
    int n,m;
    scanf("%i %i",&n,&m);
    for(int i=1;i<=n;i++){
        scanf("%i",&a[i]);
    }
    for(int i=1;i<=n;i++){
        scanf("%i",&b[i]);
    }
    while(m--){
        int s,t,u;
        scanf("%i %i %i",&s,&t,&u);
        deque<pair<int,int>> cand;
        int sum=0;
        ll ans=0;
        bool ok=true;
        for(int i=s;i<t;i++){
            while(cand.size() && cand.back().first>=b[i]){
                sum-=cand.back().second;
                cand.pop_back();
            }
            cand.push_back({b[i],u-sum});
            sum=u;
            if(a[i]>u){
                ok=false;
                break;
            }
            int need=a[i];
            sum-=need;
            //printf("Consume %i\n",a[i]);
            while(cand.size() && cand.front().second<=need){
                ans+=(ll)cand.front().first*cand.front().second;
                //printf("Buy (bi:%i amount:%i)\n",cand.front().first,cand.front().second);
                need-=cand.front().second;
                cand.pop_front();
            }
            if(need>0){
                ans+=(ll)cand.front().first*need;
                //printf("Buy (bi:%i amount:%i)\n",cand.front().first,need);
                cand.front().second-=need;
            }
        }
        printf("%lld\n",ok?ans:(ll)-1);
    }
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     scanf("%i %i",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~
Main.cpp:11:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |         scanf("%i",&a[i]);
      |         ~~~~~^~~~~~~~~~~~
Main.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         scanf("%i",&b[i]);
      |         ~~~~~^~~~~~~~~~~~
Main.cpp:18:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |         scanf("%i %i %i",&s,&t,&u);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 0 / 14
• Subtask 3: 0 / 31
• Subtask 4: 0 / 44