제출 #488370

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
488370		alexander707070	Floppy (RMI20_floppy)	C++14	컴파일 에러	0 ms	0 KiB

floppy

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

string s;

void read_array (int subtask_id,vector<int> v){
    for(int i=0;i<v.size();i++){
        if(v[i]>=0)s.push_back('0');
        else s.push_back('1');

        v[i]=abs(v[i]);
        for(int f=0;f<30;f++){
            s.push_back(v[i]%2+'0');
            v[i]/=2;
        }

    }
    save_to_floppy(s);
}

int c[80007],p;

bool li[80007][20];
int dp[80007][20];
int power[20],lg[80007];

void calc(){
    power[0]=1;
    for(int i=1;i<20;i++)power[i]=power[i-1]*2;
    lg[1]=0;
    for(int i=2;i<=80000;i++)lg[i]=lg[i/2]+1;
}

int best(int x,int y){
    if(c[x]<c[y])return x;
    else return y;
}

int rmq(int i,int j){
    if(j==0)return c[i];

    if(li[i][j])return dp[i][j];
    li[i][j]=true;

    dp[i][j]=best(rmq(i,j-1),rmq(i+power[j-1],j-1));
    return dp[i][j];
}
int mins(int l,int r){
    return best( rmq(l,lg[r-l+1]) , rmq(r-power[lg[r-l+1]]+1,lg[r-l+1]) );
}

vector<int> ans;

vector<int> solve_queries(int subtask_id,int N,const string bits,const vector<int> a,const vector<int> b){
    for(int i=0;i<bits.size();i+=31){
        for(int f=i+1;f<=i+30;f++){
            c[p]+=(bits[f]-'0');
            c[p]*=2;
        }
        if(bits[i]=='1')c[p]*=-1;
        p++;
    }
    calc();
    for(int i=0;i<a.size();i++){
        ans.push_back(mins(a[i],b[i]));
    }
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

floppy.cpp: In function 'void read_array(int, std::vector<int>)':
floppy.cpp:7:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |     for(int i=0;i<v.size();i++){
      |                 ~^~~~~~~~~
floppy.cpp:18:5: error: 'save_to_floppy' was not declared in this scope
   18 |     save_to_floppy(s);
      |     ^~~~~~~~~~~~~~
floppy.cpp: In function 'std::vector<int> solve_queries(int, int, std::string, std::vector<int>, std::vector<int>)':
floppy.cpp:55:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |     for(int i=0;i<bits.size();i+=31){
      |                 ~^~~~~~~~~~~~
floppy.cpp:64:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |     for(int i=0;i<a.size();i++){
      |                 ~^~~~~~~~~
stub.cpp: In function 'void run2()':
stub.cpp:101:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  101 |     if (query_answers.size() != M) {
      |         ~~~~~~~~~~~~~~~~~~~~~^~~~