Submission #965949

#	Time	Username	Problem	Language	Result	Execution time	Memory
965949		anango	Mechanical Doll (IOI18_doll)	C++17	0 / 100	1 ms	348 KiB

doll

#include "doll.h"
#include <bits/stdc++.h>
#define int long long
using namespace std;
int m;
int n;
int MAXN=1;
int depth=0;
vector<int> C;
vector<int> X;
vector<int> Y;

void update(int pos, int val) {
    pos+=MAXN/2;
    if (pos%2==0) {
        X[pos] = val;
    }
    else {
        Y[pos] = val;
    }
    pos/=2;
    while (pos>1) {
        int par=pos/2;
        if (pos%2==0) {
            X[par] = pos;
        }
        else {
            Y[par] = pos;
        }
        pos=par;
    }
}
int binrev(int v) {
    unsigned int r = v; 
    int s = sizeof(v) * CHAR_BIT - 1; 

    for (v >>= 1; v; v >>= 1)
    {   
    r <<= 1;
    r |= v & 1;
    s--;
    }
    r <<= s; 
    return r;
}
void create_circuit(signed M, vector<signed> A) {
    int N = A.size();
    N++;
    A.push_back(0);
    
    //top of the tree = 1
    //sons of i are 2*i and 2*i+1
    for (int i=1; i<100; i++) {
        MAXN*=2;
        if (MAXN>N) {
            depth=i;
            break;
        }
    }
    int S=MAXN;
    C=vector<int>(M+1);
    X=vector<int>(S,1);
    Y=vector<int>(S,1);
    C[0] = -1;
    int lef=MAXN/2;
    int ri=N-MAXN;
    for (int i=0; i<lef; i++) {
        update(i,A[binrev(i)]);
    }
    for (int i=ri; i<MAXN; i++) {
        update(i, A[i-ri+lef]);
    }
    vector<int32_t> C2(M+1,1);
    vector<int32_t> X2(S,1);
    vector<int32_t> Y2(S,1);
    for (int i=0; i<C.size(); i++) {
        C2[i] = C[i];
    }
    
    for (int i=0; i<X.size(); i++) {
        X2[i] = X[i];
    }
    
    for (int i=0; i<Y.size(); i++) {
        Y2[i] = Y[i];
    }
    answer(C2, X2, Y2);
}

Compilation message (stderr)

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:76:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |     for (int i=0; i<C.size(); i++) {
      |                   ~^~~~~~~~~
doll.cpp:80:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |     for (int i=0; i<X.size(); i++) {
      |                   ~^~~~~~~~~
doll.cpp:84:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |     for (int i=0; i<Y.size(); i++) {
      |                   ~^~~~~~~~~

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 18
• Subtask 6: 0 / 56