제출 #137175

#제출 시각아이디문제언어결과실행 시간메모리
137175Mahdi_Jfri전선 연결 (IOI17_wiring)C++14
17 / 100
1065 ms7144 KiB
#include "wiring.h" #include<bits/stdc++.h> using namespace std; #define ll long long #define pb push_back const int maxn = 2e5 + 20; ll dp[maxn]; long long min_total_length(vector<int> r, vector<int> b) { int n = r.size() , m = b.size(); int k = n + m; vector<pair<int , int> > a; for(auto x : r) a.pb({x , 0}); for(auto x : b) a.pb({x , 1}); sort(a.begin() , a.end()); memset(dp , 63 , sizeof dp); dp[0] = 0; for(int i = 0; i < k; i++) { int j = i; while(j >= 0 && a[j].second == a[i].second) j--; if(j < 0) continue; ll sum = 0; for(int x = j + 1; x <= i; x++) sum += a[x].first - a[j + 1].first; int sz2 = i - j; int x = j; while(x >= 0 && a[x].second == a[j].second) { ll sum = 0; for(int ind = x; ind <= j; ind++) sum += a[j].first - a[ind].first; for(int ind = j + 1; ind <= i; ind++) sum += a[ind].first - a[j + 1].first; int sz1 = j - x + 1 , sz2 = i - j; sum += 1LL * (a[j + 1].first - a[j].first) * max(sz1 , sz2); dp[i + 1] = min(dp[i + 1] , min(dp[x + 1] , dp[x]) + sum); x--; } } return dp[k]; }

컴파일 시 표준 에러 (stderr) 메시지

wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:41:7: warning: unused variable 'sz2' [-Wunused-variable]
   int sz2 = i - j;
       ^~~
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