abbyy cup a

linkhttp://codeforces.com/contest/331/problem/A2

 1 /*
 2 ID: zypz4571
 3 LANG: C++
 4 TASK: abby_a.cpp
 5  */
 6 
 7 #include <iostream>
 8 #include <cstdio>
 9 #include <cstdlib>
10 #include <cstring>
11 #include <cmath>
12 #include <cctype>
13 #include <algorithm>
14 #include <queue>
15 #include <deque>
16 #include <queue>
17 #include <list>
18 #include <map>
19 #include <set>
20 #include <vector>
21 #include <utility>
22 #include <functional>
23 #include <fstream>
24 #include <iomanip>
25 #include <sstream>
26 #include <numeric>
27 #include <cassert>
28 #include <ctime>
29 #include <iterator>
30 const int INF = 0x3f3f3f3f;
31 const int dir[8][2] = {{-1,0},{1,0},{0,-1},{0,1},{-1,-1},{-1,1},{1,-1},{1,1}};
32 using namespace std;
33 long long int a[300009], sum[300009];
34 map<int, int> coll;
35 int main ( int argc, char *argv[] )
36 {
37 #ifndef ONLINE_JUDGE
38 freopen("in.txt", "r", stdin);
39 #endif
40     ios::sync_with_stdio(false);
41     int n; cin>>n;
42     sum[0] = 0;
43     for (int i = 1; i<= n; ++i) {
44         cin>>a[i];
45         sum[i] = sum[i-1] + (a[i]>=0?a[i]:0);
46     }
47     int L, R;
48     long long ans=-(long long)2e18;
49     for (int i = n; i >= 1; --i) {
50         if (coll.count(a[i]) > 0) {
51             int pos = coll[a[i]];
52             long long tmp = a[i]*2+sum[pos-1]-sum[i];
53             if (tmp > ans) {
54                 ans = tmp;
55                 L = i; R = pos;
56             }
57         }
58         else coll[a[i]] = i;
59     }
60     cout<<ans<<' ';
61     vector<int> coll1;
62     for (int i = 1; i < L; ++i) coll1.push_back(i);
63     for (int i = L+1; i < R; ++i) if (a[i]<0) coll1.push_back(i);
64     for (int i = R+1; i <= n; ++i) coll1.push_back(i);
65     cout<<coll1.size()<<endl;
66     for (int i = 0; i < (int)coll1.size(); ++i) {
67         cout<<coll1[i];
68         if (i == (int)coll1.size()-1) cout<<endl;
69         else cout<<' ';
70     }
71         return EXIT_SUCCESS;
72 }                /* ----------  end of function main  ---------- */

care about 10^5*3*10^9=3*10^14. so you should use long long int!

And ans should not be initialized as 0x3f3f3f3f, it is too small!

posted on 2013-07-24 21:04  aries__liu  阅读(190)  评论(0编辑  收藏  举报