제출 #406730

#제출 시각아이디문제언어결과실행 시간메모리
406730casperwang전선 연결 (IOI17_wiring)C++14
0 / 100
1 ms236 KiB
#include "wiring.h" #include <bits/stdc++.h> #define ll long long #define pb emplace_back #define All(x) x.begin(), x.end() #define pii pair<int,int> #define ff first #define ss second using namespace std; #define debug(args...) kout("[ " + string(#args) + " ]", args) void kout() { cerr << endl; } template <class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ',kout(b...); } template <class T> void pary(T L, T R) { while (L != R) cerr << *L << " \n"[++L==R]; } vector<pii> build(vector<int> r, vector<int> b) { vector<pii> arr; for (int i : r) arr.pb(i, 0); for (int i : b) arr.pb(i, 1); sort(All(arr)); return arr; } ll min_total_length(vector<int> r, vector<int> b) { vector<pii> arr = build(r, b); vector<ll> dp(arr.size()+1); int kL, kR; ll inc; bool flag = false; for (int i = 0; i < arr.size(); i++) { if (flag) { inc += arr[i].ff; ll dec = (i - kR) * (- arr[kR].ff); dp[i+1] = dp[kR] + inc + dec; for (int j = kR-1; j >= kL; j--) { if (kR - j + 1 > i - kR) dec += arr[kR+1].ff - arr[kR].ff; dec += (arr[kR].ff - arr[j].ff); dp[i+1] = min(dp[i+1], dp[j] + inc + dec); } } if (i+1 < arr.size() && arr[i].ss != arr[i+1].ss) { kL = kR + 1, kR = i; flag = true; inc = 0; } } return dp[arr.size()]; }

컴파일 시 표준 에러 (stderr) 메시지

wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:29:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  for (int i = 0; i < arr.size(); i++) {
      |                  ~~^~~~~~~~~~~~
wiring.cpp:41:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |   if (i+1 < arr.size() && arr[i].ss != arr[i+1].ss) {
      |       ~~~~^~~~~~~~~~~~
wiring.cpp:42:7: warning: 'kR' may be used uninitialized in this function [-Wmaybe-uninitialized]
   42 |    kL = kR + 1, kR = i;
      |    ~~~^~~~~~~~
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