Submission #1040309

#TimeUsernameProblemLanguageResultExecution timeMemory
1040309vjudge1Divide and conquer (IZhO14_divide)C++17
0 / 100
0 ms348 KiB
#include <bits/stdc++.h> using namespace std; #define all(a) a.begin(), a.end() #define Base 311 #define endl '\n' #define fi first #define fii(i, a, b) for(int i = a; i <= b; i++) #define fid(i, a, b) for(int i = a; i >= b; i--) #define fill(a,n) memset(a, n, sizeof(a)); #define getbit(i, j) ((i >> j) & 1) #define minimize(x, y) x = (x > y ? y : x) #define maximize(x, y) x = (x < y ? y : x) #define ins insert // #define int long long #define ll long long #define maxn 1000006 #define MOD 1000000007 #define name "file" #define pb push_back #define pii pair< int, int > #define pll pair< long long , long long > #define re return #define sz(x) int(x.size()) #define se second #define ull unsigned long long void ctime () { cerr << "\n" << "\nTime elapsed: " << 1000 * clock () / CLOCKS_PER_SEC << "ms\n" ; } void iof () { if ( fopen ( name ".inp" , "r" )) { freopen ( name ".inp" , "r" , stdin ); freopen ( name ".out" , "w", stdout ); } ios_base :: sync_with_stdio ( 0 ); cin . tie ( NULL ), cout . tie ( NULL ); } struct mine { ll x, g, e; }; ll energy[maxn]; mine mines[maxn]; ll gold[maxn]; map<ll, ll> mp; int main(){ iof(); int n; cin >> n; ll ans = 0; fii(i, 1, n) { ll u, v, val; cin >> u >> v >> val; mines[i] = {u, v, val}; energy[i] = energy[i - 1] + val; gold[i] = gold[i - 1] + v; if (mp[energy[i] - u] == 0) mp[energy[i - 1] - u] = i; else { ans = max(ans, gold[i] - gold[mp[energy[i - 1] - u]]); } if (val == 1) ans = max(ans, v); } cout << ans; ctime(); re 0; }

Compilation message (stderr)

divide.cpp: In function 'void iof()':
divide.cpp:35:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |         freopen ( name ".inp" , "r" , stdin );
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
divide.cpp:36:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         freopen ( name ".out" , "w", stdout );
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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