제출 #399900

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
399900		duality	Cultivation (JOI17_cultivation)	C++11	0 / 100	2 ms	204 KiB

cultivation

#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 S[300],E[300];
vi vv;
vector<pair<pii,int> > vv2;
multiset<int> SS;
int main() {
    int i;
    int R,C,N;
    scanf("%d %d %d",&R,&C,&N);
    for (i = 0; i < N; i++) scanf("%d %d",&S[i],&E[i]),S[i]--,E[i]--;

    int j,k;
    int ans = 2e9;
    for (i = 0; i < N; i++) {
        int u = S[i];
        vv.pb(0),vv.pb(R-1);
        for (j = 0; j < N; j++) vv.pb(max(S[j]-u-1,0));
        sort(vv.begin(),vv.end());
        vv.resize(unique(vv.begin(),vv.end())-vv.begin());
        for (j = 0; j < vv.size(); j++) {
            vpii v;
            for (k = 0; k < N; k++) {
                if ((vv[j] >= S[k]-u) && (vv[j] <= S[k])) v.pb(mp(0,E[k]));
                else if (vv[j] > S[k]) v.pb(mp(vv[j]-S[k],E[k]));
            }
            sort(v.begin(),v.end());
            for (k = 0; k < v.size(); k++) SS.insert(v[k].second);
            int l = *SS.begin(),r = C-*SS.rbegin()-1,lr = 0;
            for (auto it = SS.begin(); it != SS.end(); it++) {
                auto it2 = it;
                it2++;
                if (it2 != SS.end()) lr = max(lr,*it2-*it-1);
            }
            vv2.pb(mp(mp(R,l),0)),vv2.pb(mp(mp(R,r),1)),vv2.pb(mp(mp(R,lr),2));
            for (k = v.size()-1; k >= 0; k--) {
                auto it = SS.find(v[k].second);
                it = SS.erase(it);
                auto it2 = it;
                if (it2 == SS.begin()) l = max(l,*it);
                else it2--;
                if (it == SS.end()) r = max(R,C-*it2-1);
                else lr = max(lr,*it-*it2-1);
                vv2.pb(mp(mp(v[k].first-1,l),0)),vv2.pb(mp(mp(v[k].first-1,r),1)),vv2.pb(mp(mp(v[k].first-1,lr),2));
            }
        }
        int l = 0,r = 0,lr = 0;
        sort(vv2.begin(),vv2.end());
        for (j = vv2.size()-1; j >= 0; j--) {
            if (vv2[j].first.first < R) ans = min(ans,u+vv2[j].first.first+1+max(l+r,lr));
            if (vv2[j].second == 0) l = max(l,vv2[j].first.second);
            else if (vv2[j].second == 1) r = max(r,vv2[j].first.second);
            else lr = max(lr,vv2[j].first.second);
        }
        vv.clear(),vv2.clear();
    }
    printf("%d\n",ans);

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

cultivation.cpp: In function 'int main()':
cultivation.cpp:76:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |         for (j = 0; j < vv.size(); j++) {
      |                     ~~^~~~~~~~~~~
cultivation.cpp:83:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |             for (k = 0; k < v.size(); k++) SS.insert(v[k].second);
      |                         ~~^~~~~~~~~~
cultivation.cpp:65:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   65 |     scanf("%d %d %d",&R,&C,&N);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~
cultivation.cpp:66:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   66 |     for (i = 0; i < N; i++) scanf("%d %d",&S[i],&E[i]),S[i]--,E[i]--;
      |                             ~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 30
• Subtask 5: 0 / 20
• Subtask 6: 0 / 20