Submission #895670

#	Time	Username	Problem	Language	Result	Execution time	Memory
895670		Andrey	Wiring (IOI17_wiring)	C++14	25 / 100	22 ms	5200 KiB

wiring

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

long long min_total_length(std::vector<int> r, std::vector<int> b) {
    int n = r.size(),m = b.size();
    vector<int> haha(n+m+1);
    for(int i = 0; i < n; i++) {
        haha[r[i]] = 1;
    }
    vector<int> bruh(0);
    int p = 0;
    for(int i = 1; i <= n+m; i++) {
        if(i == 1 || haha[i] == haha[i-1]) {
            p++;
        }
        else {
            bruh.push_back(p);
            p = 1;
        }
    }
    bruh.push_back(p);
    vector<long long> ans(0);
    vector<long long> sm(0);
    vector<long long> big(0);
    ans.push_back(bruh[0]);
    sm.push_back(bruh[0]);
    big.push_back(bruh[0]);
    for(int i = 1; i < bruh.size()-1; i++) {
        ans.push_back(bruh[i]/2);
        sm.push_back(bruh[i]/2);
        ans.push_back((bruh[i]+1)/2);
        big.push_back((bruh[i]+1)/2);
    }
    ans.push_back(bruh[bruh.size()-1]);
    sm.push_back(bruh[bruh.size()-1]);
    big.push_back(bruh[bruh.size()-1]);
    vector<pair<long long,long long>> dp(bruh.size());
    for(int i = 1; i < bruh.size(); i++) {
        dp[i] = {min(dp[i-1].first+max(big[i-1],sm[i]),dp[i-1].second+max(sm[i-1],sm[i])),min(dp[i-1].first+max(big[i],big[i-1]),dp[i-1].second+max(big[i],sm[i-1]))};
    }
    long long sb = 0;
    for(int i = 0; i < ans.size(); i++) {
        sb+=(ans[i]-1)*ans[i]/2;
    }
	return sb+dp[bruh.size()-1].first;
}

Compilation message (stderr)

wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for(int i = 1; i < bruh.size()-1; i++) {
      |                    ~~^~~~~~~~~~~~~~~
wiring.cpp:39:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     for(int i = 1; i < bruh.size(); i++) {
      |                    ~~^~~~~~~~~~~~~
wiring.cpp:43:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for(int i = 0; i < ans.size(); i++) {
      |                    ~~^~~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 13
• Subtask 3: 0 / 10
• Subtask 4: 25 / 25
• Subtask 5: 0 / 45