Submission #1026790

#	Time	Username	Problem	Language	Result	Execution time	Memory
1026790		Zicrus	Vision Program (IOI19_vision)	C++17	54 / 100	7 ms	1116 KiB

vision

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

typedef long long ll;

vector<int> distIdVec(vector<int> xId, int W, int K) {
    int sameX = add_xor(xId);
    vector<int> distXId;
    for (int xOffset = 0; xOffset <= K && xOffset < W; xOffset++) {
        vector<int> offsetId;
        for (int xPos = 0; xPos < W - xOffset; xPos++) {
            offsetId.push_back(add_and({xId[xPos], xOffset == 0 ? sameX : xId[xPos + xOffset]}));
        }
        distXId.push_back(add_or(offsetId));
    }
    return distXId;
}

void construct_network(int H, int W, int K) {
    if ((H <= 30 && W <= 30) || K == 1) {
        vector<int> yId(H);
        for (int i = 0; i < H; i++) {
            vector<int> r;
            for (int j = 0; j < W; j++) {
                r.push_back(W * i + j);
            }
            yId[i] = add_or(r);
        }
        vector<int> xId(W);
        for (int i = 0; i < W; i++) {
            vector<int> c;
            for (int j = 0; j < H; j++) {
                c.push_back(W * j + i);
            }
            xId[i] = add_or(c);
        }
        vector<int> distXId = distIdVec(xId, W, K);
        vector<int> distYId = distIdVec(yId, H, K);
        vector<int> kAtXPosId;
        for (int x = 0; x <= K && x < distXId.size(); x++) {
            if (K-x >= distYId.size()) continue;
            kAtXPosId.push_back(add_and({distXId[x], distYId[K-x]}));
        }
        add_or(kAtXPosId);
        return;
    }
    
    vector<int> s;
    ll x = min(W-1, K);
    ll y = K - x;
    while (x >= 0 && y < H) {
        s.push_back(W * y + x);
        x--; y++;
    }
    add_or(s);
}

Compilation message (stderr)

vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:41:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         for (int x = 0; x <= K && x < distXId.size(); x++) {
      |                                   ~~^~~~~~~~~~~~~~~~
vision.cpp:42:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |             if (K-x >= distYId.size()) continue;
      |                 ~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 0 / 15
• Subtask 5: 0 / 12
• Subtask 6: 8 / 8
• Subtask 7: 14 / 14
• Subtask 8: 0 / 19