Submission #1064909

#	Time	Username	Problem	Language	Result	Execution time	Memory
1064909		Ahmed57	Vision Program (IOI19_vision)	C++17	Compilation error	0 ms	0 KiB

vision

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

void construct_network(int H, int W, int K){
    for(int i = 0;i<H;i++){
        vector<int> v;
        for(int j = 0;j<W;j++){
            v.push_back(i*W+j);
        }
        int val = add_xor(v);
    }
    for(int j = 0;j<W;j++){
        vector<int> v;
        for(int i = 0;i<H;i++){
            v.push_back(i*W+j);
        }
        int val = add_xor(v);
    }
    int init = H*W;
    for(int i = 0;i<H;i++){
        vector<int> v;
        v.push_back(init+i);
        if(i)v.push_back(init+H+W+i-1);
        int val = add_xor(v);
    }
    init = H*W+H;
    for(int i = 0;i<W;i++){
        vector<int> v;
        v.push_back(init+i);
        if(i)v.push_back(init+H+W+i-1);
        int val = add_xor(v);
    }
    init = H*W+H+W;
    int val = add_not(init);
    vector<int> bits;
    for(int i = 0;i<15;i++){
        bits.push_back(add_and({val,init}));
    }
    for(int i = 0;i<H+W;i++){
        vector<int> nbits;
        vector<int> lol = {init+i};
        for(int i = 0;i<15;i++){
            int val = add_and(lol);
            nbits.push_back(add_xor({val,bits[i]}));
            lol.push_back(bits[i]);
        }
        bits=nbits;
    }
    vector<int> nbits;
    for(int i = 0;i<15;i++){
        if(K&(1<<i)){
            nbits.push_back(bits[i]);
        }else nbits.push_back(add_not(bits[i]));
    }
    int val = add_and(nbits);
}

Compilation message (stderr)

vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:11:13: warning: unused variable 'val' [-Wunused-variable]
   11 |         int val = add_xor(v);
      |             ^~~
vision.cpp:18:13: warning: unused variable 'val' [-Wunused-variable]
   18 |         int val = add_xor(v);
      |             ^~~
vision.cpp:25:13: warning: unused variable 'val' [-Wunused-variable]
   25 |         int val = add_xor(v);
      |             ^~~
vision.cpp:32:13: warning: unused variable 'val' [-Wunused-variable]
   32 |         int val = add_xor(v);
      |             ^~~
vision.cpp:56:9: error: redeclaration of 'int val'
   56 |     int val = add_and(nbits);
      |         ^~~
vision.cpp:35:9: note: 'int val' previously declared here
   35 |     int val = add_not(init);
      |         ^~~