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Submission #29785

# Submission time Handle Problem Language Result Execution time Memory
29785 2017-07-20T15:21:28 Z osmanorhan Wombats (IOI13_wombats) C++14
100 / 100
 7259 ms 180568 KB 
#include "wombats.h"
#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define umax( x, y ) x = max( x, y )
#define umin( x, y ) x = min( x, y )

using namespace std;

const int maxn = 100000;
const int maxR = 5020;
const int maxC = 220;

typedef long long Lint;
typedef pair<int,int> ii;
typedef pair<int,ii> iii;

struct node {
    int go[201][201];
    int l, r;
};

node segment[1<<10];
vector<ii> v;
int n, c, r;
int sz = 10;
int R[5001][201];
int C[5001][201];
int opt[201][201];

bool comp( const ii &a, const ii &b ) {
    return a.se-a.fi < b.se-b.fi;
}

node merge( node a, node b ) {
    if( b.r == -1 ) return a;
    if( a.r == -1 ) return b;

    node t;
    t.l = a.l;
    t.r = b.r;
    for(int p=0;p<v.size();p++) {
        int x = v[p].fi;
        int y = v[p].se;
        opt[x][y] = 0;
        int val = 1e9;
        int beg = 0, en = c-1;
        if( x+1 < c ) umin( en, opt[x+1][y] );
        if( y > 0 ) umax( beg, opt[x][y-1] );
        while( beg <= en ) {
            int h = a.go[x][beg]+C[a.r][beg]+b.go[beg][y];
            if( h < val ) {
                val = h;
                opt[x][y] = beg;
            }
            beg++;
        }
        t.go[x][y] = val;
    }
    return t;
}

void relax( int x, int ar[] ) {
    for(int i=c-2;i>=0;i--)
        umin( ar[i], ar[i+1]+R[x][i] );
    for(int i=1;i<c;i++)
        umin( ar[i], ar[i-1]+R[x][i-1] );
}

void calc( int n ) {
    node &t = segment[n];
    for(int i=0;i<c;i++)
        for(int j=0;j<c;j++)
            t.go[i][j] = (i==j)? 0:1e9;

    for(int i=0;i<c;i++) relax( t.l, t.go[i] );
    for(int k=t.l;k<t.r;k++) {

        for(int i=0;i<c;i++)
            for(int j=0;j<c;j++) t.go[i][j] += C[k][j];

        for(int i=0;i<c;i++) relax( k+1, t.go[i] );
    }

}

void init(int rr, int cc, int RR[5000][200], int CC[5000][200]) {

    r = rr;
    c = cc;
    for(int i=0;i<r;i++)
        for(int j=0;j<c-1;j++)
            R[i][j] = RR[i][j];
    for(int i=0;i<r-1;i++)
        for(int j=0;j<c;j++)
            C[i][j] = CC[i][j];

    for(int i=0;i<c;i++)
    for(int j=0;j<c;j++) v.pb( ii( i, j ) );
    sort( v.begin(), v.end(), comp );

    n = 1;
    while( n < (r-1)/sz+1 ) n <<= 1;

    for(int i=0;i<n;i++) {
        if( i*sz < r ) {
            segment[i+n].l = i*sz;
            segment[i+n].r = min( i*sz+sz-1, r-1 );
            calc( i+n );
        } else {
            segment[i+n].r = -1;
        }
    }
    for(int i=n-1;i>0;i--)
        segment[i] = merge( segment[i+i], segment[i+i+1] );
}

void changeH(int P, int Q, int W) {
    R[P][Q] = W;
    int k = (P/sz+n);
    calc( k );
    for(k>>=1;k;k>>=1) segment[k] = merge( segment[k+k], segment[k+k+1] );

}

void changeV(int P, int Q, int W) {
    C[P][Q] = W;
    int k = P / sz + n;
    if( P%sz != sz-1 ) {
        calc( k );
    }
    for(k>>=1;k;k>>=1)
        segment[k] = merge( segment[k+k], segment[k+k+1] );
}

int escape(int V1, int V2) {
    return segment[1].go[V1][V2];
}

Compilation message

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
  int res;
      ^
wombats.cpp: In function 'node merge(node, node)':
wombats.cpp:43:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int p=0;p<v.size();p++) {
                  ^

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 306 ms 179968 KB Output is correct
2 Correct 376 ms 179968 KB Output is correct
3 Correct 489 ms 179972 KB Output is correct
4 Correct 416 ms 179972 KB Output is correct
5 Correct 363 ms 179968 KB Output is correct
6 Correct 0 ms 179500 KB Output is correct
7 Correct 0 ms 179500 KB Output is correct
8 Correct 0 ms 179496 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 179496 KB Output is correct
2 Correct 0 ms 179496 KB Output is correct
3 Correct 0 ms 179496 KB Output is correct
4 Correct 0 ms 179976 KB Output is correct
5 Correct 0 ms 179968 KB Output is correct
6 Correct 0 ms 179972 KB Output is correct
7 Correct 0 ms 179968 KB Output is correct
8 Correct 0 ms 179968 KB Output is correct
9 Correct 0 ms 179968 KB Output is correct
10 Correct 0 ms 179972 KB Output is correct
11 Correct 116 ms 179968 KB Output is correct
12 Correct 0 ms 179972 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 159 ms 180176 KB Output is correct
2 Correct 179 ms 180180 KB Output is correct
3 Correct 189 ms 180176 KB Output is correct
4 Correct 163 ms 180176 KB Output is correct
5 Correct 199 ms 180184 KB Output is correct
6 Correct 0 ms 179496 KB Output is correct
7 Correct 0 ms 179496 KB Output is correct
8 Correct 0 ms 179496 KB Output is correct
9 Correct 796 ms 180184 KB Output is correct
10 Correct 0 ms 179492 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 369 ms 179968 KB Output is correct
2 Correct 353 ms 179972 KB Output is correct
3 Correct 429 ms 179968 KB Output is correct
4 Correct 439 ms 179972 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 156 ms 180176 KB Output is correct
2 Correct 153 ms 180176 KB Output is correct
3 Correct 189 ms 180176 KB Output is correct
4 Correct 173 ms 180180 KB Output is correct
5 Correct 193 ms 180180 KB Output is correct
6 Correct 393 ms 179968 KB Output is correct
7 Correct 386 ms 179968 KB Output is correct
8 Correct 436 ms 179968 KB Output is correct
9 Correct 463 ms 179972 KB Output is correct
10 Correct 389 ms 179968 KB Output is correct
11 Correct 379 ms 179972 KB Output is correct
12 Correct 439 ms 179972 KB Output is correct
13 Correct 399 ms 179972 KB Output is correct
14 Correct 339 ms 179968 KB Output is correct
15 Correct 0 ms 179500 KB Output is correct
16 Correct 0 ms 179500 KB Output is correct
17 Correct 0 ms 179500 KB Output is correct
18 Correct 0 ms 179968 KB Output is correct
19 Correct 0 ms 179972 KB Output is correct
20 Correct 0 ms 179968 KB Output is correct
21 Correct 0 ms 179972 KB Output is correct
22 Correct 0 ms 179968 KB Output is correct
23 Correct 0 ms 179972 KB Output is correct
24 Correct 0 ms 179972 KB Output is correct
25 Correct 93 ms 179976 KB Output is correct
26 Correct 0 ms 179968 KB Output is correct
27 Correct 809 ms 180176 KB Output is correct
28 Correct 1973 ms 180176 KB Output is correct
29 Correct 1963 ms 180176 KB Output is correct
30 Correct 1906 ms 180180 KB Output is correct
31 Correct 1923 ms 180176 KB Output is correct
32 Correct 0 ms 179496 KB Output is correct

Subtask #6
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 159 ms 180180 KB Output is correct
2 Correct 149 ms 180176 KB Output is correct
3 Correct 166 ms 180180 KB Output is correct
4 Correct 159 ms 180176 KB Output is correct
5 Correct 199 ms 180176 KB Output is correct
6 Correct 363 ms 179972 KB Output is correct
7 Correct 329 ms 179968 KB Output is correct
8 Correct 409 ms 179968 KB Output is correct
9 Correct 449 ms 179968 KB Output is correct
10 Correct 363 ms 179972 KB Output is correct
11 Correct 369 ms 179972 KB Output is correct
12 Correct 463 ms 179972 KB Output is correct
13 Correct 369 ms 179968 KB Output is correct
14 Correct 363 ms 179972 KB Output is correct
15 Correct 2246 ms 180560 KB Output is correct
16 Correct 7259 ms 180564 KB Output is correct
17 Correct 0 ms 179500 KB Output is correct
18 Correct 0 ms 179496 KB Output is correct
19 Correct 0 ms 179496 KB Output is correct
20 Correct 0 ms 179968 KB Output is correct
21 Correct 0 ms 179972 KB Output is correct
22 Correct 0 ms 179972 KB Output is correct
23 Correct 0 ms 179972 KB Output is correct
24 Correct 0 ms 179968 KB Output is correct
25 Correct 0 ms 179972 KB Output is correct
26 Correct 0 ms 179972 KB Output is correct
27 Correct 73 ms 179968 KB Output is correct
28 Correct 0 ms 179968 KB Output is correct
29 Correct 763 ms 180180 KB Output is correct
30 Correct 2113 ms 180176 KB Output is correct
31 Correct 6466 ms 180564 KB Output is correct
32 Correct 6209 ms 180568 KB Output is correct
33 Correct 2016 ms 180180 KB Output is correct
34 Correct 6436 ms 180564 KB Output is correct
35 Correct 2049 ms 180180 KB Output is correct
36 Correct 7066 ms 180564 KB Output is correct
37 Correct 2066 ms 180180 KB Output is correct
38 Correct 6829 ms 180560 KB Output is correct
39 Correct 0 ms 179496 KB Output is correct
40 Correct 7223 ms 180560 KB Output is correct