Submission #77348

#	Time	Username	Problem	Language	Result	Execution time	Memory
77348		duality	Global Warming (CEOI18_glo)	C++11	100 / 100	68 ms	2800 KiB

glo

#define DEBUG 0

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

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------

int t[200000];
vi v[2];
int main() {
    int i;
    int n,x;
    scanf("%d %d",&n,&x);
    for (i = 0; i < n; i++) scanf("%d",&t[i]);

    int ans = 0;
    v[0].pb(t[0]),v[1].pb(t[0]);
    for (i = 1; i < n; i++) {
        int p0 = lower_bound(v[0].begin(),v[0].end(),t[i])-v[0].begin();
        if (p0 == v[0].size()) v[0].pb(t[i]);
        else v[0][p0] = t[i];
        int p1 = lower_bound(v[1].begin(),v[1].end(),t[i]+x)-v[1].begin();
        if (p1 == v[1].size()) v[1].pb(t[i]+x);
        else v[1][p1] = t[i]+x;
        if ((p0 >= v[1].size()) || (v[0][p0] < v[1][p0])) {
            if (p0 >= v[1].size()) v[1].pb(0);
            v[1][p0] = v[0][p0];
        }
    }
    printf("%d\n",(int) v[1].size());

    return 0;
}

Compilation message (stderr)

glo.cpp: In function 'int main()':
glo.cpp:70:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (p0 == v[0].size()) v[0].pb(t[i]);
             ~~~^~~~~~~~~~~~~~
glo.cpp:73:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (p1 == v[1].size()) v[1].pb(t[i]+x);
             ~~~^~~~~~~~~~~~~~
glo.cpp:75:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if ((p0 >= v[1].size()) || (v[0][p0] < v[1][p0])) {
              ~~~^~~~~~~~~~~~~~
glo.cpp:76:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if (p0 >= v[1].size()) v[1].pb(0);
                 ~~~^~~~~~~~~~~~~~
glo.cpp:66:9: warning: unused variable 'ans' [-Wunused-variable]
     int ans = 0;
         ^~~
glo.cpp:63:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&n,&x);
     ~~~~~^~~~~~~~~~~~~~~
glo.cpp:64:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (i = 0; i < n; i++) scanf("%d",&t[i]);
                             ~~~~~^~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 13 / 13
• Subtask 4: 10 / 10
• Subtask 5: 20 / 20
• Subtask 6: 17 / 17
• Subtask 7: 25 / 25