Submission #341214

#	Time	Username	Problem	Language	Result	Execution time	Memory
341214		beksultan04	UFO (IZhO14_ufo)	C++14	100 / 100	1116 ms	91428 KiB

ufo

#include <bits/stdc++.h>
using namespace std;
//#define int long long
#define pii pair<int,int>
#define OK puts("OK");
#define NO puts("NO");
#define YES puts("YES");
#define fr first
#define sc second
#define ret return
#define scanl(a) scanf("%lld",&a);
#define scanll(a,b) scanf("%lld %lld",&a, &b);
#define scanlll(a,b,c) scanf("%lld %lld %lld",&a,&b,&c);
#define scan1(a) scanf("%d",&a);
#define scan2(a,b) scanf("%d %d",&a, &b);
#define scan3(a,b,c) scanf("%d %d %d",&a,&b,&c);
#define all(s) s.begin(),s.end()
#define allr(s) s.rbegin(),s.rend()
#define pb push_back
#define sz(v) (int)v.size()
#define endi puts("");
#define eps 1e-12
const int N = 1e6+12,INF=1e9+7;
vector<int> decre;
int r;
struct segtree{
	int sz;
	vector<int> t;
	void build(int n, vector<int> v){
		assert((int)v.size() == n+1);
		sz=1;
		while(sz < n)sz<<=1;
		t.assign(sz*2, 0);
		for(int i=0;i<n;i++){
			t[i+sz] = v[i+1];
		}for(int i=sz-1;i>0;i--){
			t[i] = max(t[i<<1], t[i<<1|1]);
		}
	}
	void decrease_it(int pos){
		pos += sz-1;
		for(t[pos]--; pos > 1; pos >>= 1)t[pos>>1] = max(t[pos], t[pos^1]);
	}
	int remaining;
	int height;
	void going(int L, int R, int x){
		if(remaining == 0 || t[x] < height)return;
		if(R-L == 1){
			t[x]--;
			remaining--;
			decre.pb(x-sz+1);
			return;
		}int mid = (L+R)/2;
		going(L, mid, x<<1);
		going(mid, R, x<<1|1);
		t[x] = max(t[x<<1], t[x<<1|1]);
	}
	void going_in_reverse(int L, int R, int x){
		if(remaining == 0 || t[x] < height)return;
		if(R-L == 1){
			t[x]--;
			remaining--;
			decre.pb(x-sz+1);
			return;
		}int mid = (L+R)/2;
		going_in_reverse(mid, R, x<<1|1);
		going_in_reverse(L, mid, x<<1);
		t[x] = max(t[x<<1], t[x<<1|1]);
	}
	void decrease_them(int h){
		decre.clear();
		remaining = r;
		height = h;
		going(0, sz, 1);
	}
	void decrease_them_in_reverse(int h){
		decre.clear();
		remaining = r;
		height = h;
		going_in_reverse(0, sz, 1);
	}
	int get(int pos){
		return t[pos+sz-1];
	}
};

main(){
    int n,m,i,j,t,p,mx=0;
    vector <vector <int> > q;
    scan3(n,m,r)
    scan2(t,p)
    q.resize(n+1);

    vector <segtree> col(n+1);
    vector <segtree> row(m+1);
    for (i=0;i<=n;++i){
        q[i].resize(m+1);
        for (j=0;j<=m;++j){
            q[i][j]=0;
        }
    }
    for (i=1;i<=n;++i){
        for (j=1;j<=m;++j){
            scan1(q[i][j])
        }
        col[i].build(m, q[i]);
    }
    for (i=1;i<=m;++i){
        vector <int> pomosh(n+1);
        for (j=1;j<=n;++j)pomosh[j]=q[j][i];
        row[i].build(n, pomosh);
    }






    while (t--){
        char cha;
        int x,y;
        cin>>cha;
        scan2(x,y)
        if (cha == 'N'){

            row[x].decrease_them(y);
            for (i=0;i<decre.size();++i){
                col[decre[i]].decrease_it(x);
            }

        }
        if (cha == 'S'){

            row[x].decrease_them_in_reverse(y);
            for (i=0;i<decre.size();++i){
                col[decre[i]].decrease_it(x);
            }

        }
        if (cha == 'W'){

            col[x].decrease_them(y);
            for (i=0;i<decre.size();++i){
                row[decre[i]].decrease_it(x);
            }

        }
        if (cha == 'E'){

            col[x].decrease_them_in_reverse(y);
            for (i=0;i<decre.size();++i){
                row[decre[i]].decrease_it(x);
            }

        }

    }

    for (i=1;i<=n;++i){
        for (j=1;j<=m;++j){
            q[i][j] = col[i].get(j);
        }
    }


    for (i=1;i<=n;++i){
        for (j=1;j<=m;++j){
            q[i][j] = q[i-1][j]+q[i][j-1]-q[i-1][j-1]+q[i][j];
        }
    }
    for (i=1;i<=n;++i){
        for (j=1;j<=m;++j){
            int ans=0,x=i,y=j;
            ans+=q[x][y];
            ans+=q[max(x-p,0)][max(y-p,0)];
            ans-=q[max(x-p,0)][y];
            ans-=q[x][max(y-p,0)];
            mx = max(ans,mx);

        }
    }
    cout <<mx;
}

Compilation message (stderr)

ufo.cpp:87:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   87 | main(){
      |      ^
ufo.cpp: In function 'int main()':
ufo.cpp:127:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  127 |             for (i=0;i<decre.size();++i){
      |                      ~^~~~~~~~~~~~~
ufo.cpp:135:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  135 |             for (i=0;i<decre.size();++i){
      |                      ~^~~~~~~~~~~~~
ufo.cpp:143:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  143 |             for (i=0;i<decre.size();++i){
      |                      ~^~~~~~~~~~~~~
ufo.cpp:151:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  151 |             for (i=0;i<decre.size();++i){
      |                      ~^~~~~~~~~~~~~
ufo.cpp:16:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 | #define scan3(a,b,c) scanf("%d %d %d",&a,&b,&c);
      |                      ~~~~~^~~~~~~~~~~~~~~~~~~~~
ufo.cpp:90:5: note: in expansion of macro 'scan3'
   90 |     scan3(n,m,r)
      |     ^~~~~
ufo.cpp:15:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   15 | #define scan2(a,b) scanf("%d %d",&a, &b);
      |                    ~~~~~^~~~~~~~~~~~~~~~
ufo.cpp:91:5: note: in expansion of macro 'scan2'
   91 |     scan2(t,p)
      |     ^~~~~
ufo.cpp:14:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   14 | #define scan1(a) scanf("%d",&a);
      |                  ~~~~~^~~~~~~~~
ufo.cpp:104:13: note: in expansion of macro 'scan1'
  104 |             scan1(q[i][j])
      |             ^~~~~
ufo.cpp:15:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   15 | #define scan2(a,b) scanf("%d %d",&a, &b);
      |                    ~~~~~^~~~~~~~~~~~~~~~
ufo.cpp:123:9: note: in expansion of macro 'scan2'
  123 |         scan2(x,y)
      |         ^~~~~

• Subtask 1: 100 / 100