Submission #750238

#TimeUsernameProblemLanguageResultExecution timeMemory
750238bachhoangxuanAlice, Bob, and Circuit (APIO23_abc)C++17
54 / 100
84 ms8856 KiB
#include "abc.h" #include <bits/stdc++.h> using namespace std; #define pii pair<int,int> #define se second #define fi first // you may find the definitions useful const int OP_ZERO = 0; // f(OP_ZERO, x0, x1) = 0 const int OP_NOR = 1; // f(OP_NOR, x0, x1) = !(x0 || x1) const int OP_GREATER = 2; // f(OP_GREATER, x0, x1) = (x0 > x1) const int OP_NOT_X1 = 3; // f(OP_NOT_X1, x0, x1) = !x1 const int OP_LESS = 4; // f(OP_LESS, x0, x1) = (x0 < x1) const int OP_NOT_X0 = 5; // f(OP_NOT_X0, x0, x1) = !x0 const int OP_XOR = 6; // f(OP_XOR, x0, x1) = (x0 ^ x1) const int OP_NAND = 7; // f(OP_NAND, x0, x1) = !(x0 && x1) const int OP_AND = 8; // f(OP_AND, x0, x1) = (x0 && x1) const int OP_EQUAL = 9; // f(OP_EQUAL, x0, x1) = (x0 == x1) const int OP_X0 = 10; // f(OP_X0, x0, x1) = x0 const int OP_GEQ = 11; // f(OP_GEQ, x0, x1) = (x0 >= x1) const int OP_X1 = 12; // f(OP_X1, x0, x1) = x1 const int OP_LEQ = 13; // f(OP_LEQ, x0, x1) = (x0 <= x1) const int OP_OR = 14; // f(OP_OR, x0, x1) = (x0 || x1) const int OP_ONE = 15; // f(OP_ONE, x0, x1) = 1 // Alice int // returns la alice( /* in */ const int n, /* in */ const char names[][5], /* in */ const unsigned short numbers[], /* out */ bool outputs_alice[] ) { vector<pair<string,int>> name; for(int i=0;i<n;i++){ string s; for(int t=0;t<4;t++) s+=names[i][t]; name.push_back({s,i}); } sort(name.begin(),name.end()); int l=0; for(int i=0;i<n;i++){ for(int j=0;j<16;j++) outputs_alice[l++]=(numbers[name[i].se]>>j)&1; } for(int i=0;i<n;i++){ for(int j=0;j<n;j++) outputs_alice[l++]=(j==name[i].se); } return l; } // Bob int // returns lb bob( /* in */ const int m, /* in */ const char senders[][5], /* in */ const char recipients[][5], /* out */ bool outputs_bob[] ) { map<string,int> mp; for(int i=0;i<m;i++){ string s,r; for(int t=0;t<4;t++){s+=senders[i][t];r+=recipients[i][t];} mp[s]=1;mp[r]=1; } int n=0; for(auto &it:mp) it.se=n++; int l=0; vector<vector<int>> f(n,vector<int>(n,0)); for(int i=0;i<m;i++){ string s,r; for(int t=0;t<4;t++){s+=senders[i][t];r+=recipients[i][t];} f[mp[r]][mp[s]]=1; } for(int i=0;i<n;i++){ for(int j=0;j<n;j++) outputs_bob[l++]=f[i][j]; } outputs_bob[l++]=0; return l; } // Circuit struct mask{ vector<int> p; mask(int sz=16){p.assign(sz,0);} }; int // returns l circuit( /* in */ const int la, /* in */ const int lb, /* out */ int operations[], /* out */ int operands[][2], /* out */ int outputs_circuit[][16] ) { int l=la+lb,s0=la+lb-1,n=sqrt(lb-1); auto g = [&](int x,int y,int o){ operations[l]=o; operands[l][0]=x; operands[l][1]=y; return (l++); }; auto add = [&](mask &px,mask &py){ mask pa; int c=s0; for(int j=0;j<16;j++){ int x=px.p[j],y=py.p[j]; int a=g(x,y,OP_XOR); int b=g(x,y,OP_AND); int d=g(c,a,OP_XOR); int e=g(c,a,OP_AND); int f=g(b,e,OP_OR); pa.p[j]=d;c=f; } return pa; }; vector<mask> res(n),ans(n); mask f; for(int i=0;i<n;i++){ for(int j=0;j<16;j++) res[i].p[j]=g(s0,s0,OP_AND); for(int j=0;j<n;j++){ int cur=la+i*n+j; for(int t=0;t<16;t++) f.p[t]=g(cur,j*16+t,OP_AND); res[i]=add(res[i],f); } //for(int j=0;j<16;j++) cout << res[i].p[j] << ' '; //cout << '\n'; } for(int i=0;i<n;i++){ for(int j=0;j<16;j++) ans[i].p[j]=g(s0,s0,OP_AND); } for(int i=0;i<n;i++){ for(int j=0;j<n;j++){ int cur=n*16+i*n+j; for(int t=0;t<16;t++) f.p[t]=g(cur,res[i].p[t],OP_AND); ans[j]=add(ans[j],f); } } for(int i=0;i<n;i++){ for(int j=0;j<16;j++) outputs_circuit[i][j]=ans[i].p[j]; } return l; }
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