Submission #1128706

#	Time	Username	Problem	Language	Result	Execution time	Memory
1128706		rayan_bd	Regions (IOI09_regions)	C++20	19 / 100	8074 ms	196608 KiB

regions

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

#pragma GCC optimize(2)
#pragma GCC optimize(3)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse")
#pragma GCC optimize("-fgcse-lm")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-ftree-pre")
#pragma GCC optimize("-ftree-vrp")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-falign-jumps")
#pragma GCC optimize("-falign-loops")
#pragma GCC optimize("-falign-labels")
#pragma GCC optimize("-fdevirtualize")
#pragma GCC optimize("-fcaller-saves")
#pragma GCC optimize("-fcrossjumping")
#pragma GCC optimize("-fthread-jumps")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-fwhole-program")
#pragma GCC optimize("-freorder-blocks")
#pragma GCC optimize("-fschedule-insns")
#pragma GCC optimize("inline-functions")
#pragma GCC optimize("-ftree-tail-merge")
#pragma GCC optimize("-fschedule-insns2")
#pragma GCC optimize("-fstrict-aliasing")
#pragma GCC optimize("-fstrict-overflow")
#pragma GCC optimize("-falign-functions")
#pragma GCC optimize("-fcse-skip-blocks")
#pragma GCC optimize("-fcse-follow-jumps")
#pragma GCC optimize("-fsched-interblock")
#pragma GCC optimize("-fpartial-inlining")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("-freorder-functions")
#pragma GCC optimize("-findirect-inlining")
#pragma GCC optimize("-fhoist-adjacent-loads")
#pragma GCC optimize("-frerun-cse-after-loop")
#pragma GCC optimize("inline-small-functions")
#pragma GCC optimize("-finline-small-functions")
#pragma GCC optimize("-ftree-switch-conversion")
#pragma GCC optimize("-foptimize-sibling-calls")
#pragma GCC optimize("-fexpensive-optimizations")
#pragma GCC optimize("-funsafe-loop-optimizations")
#pragma GCC optimize("inline-functions-called-once")
#pragma GCC optimize("-fdelete-null-pointer-checks")

#define pb push_back
#define fi first
#define se second
#define all(x) x.begin(),x.end()

const int mxN = 2e5+1;

void io(){
    #ifndef ONLINE_JUDGE
    freopen("input.in","r",stdin);
    freopen("output.out","w",stdout);
    #endif
}


vector<int> adj[mxN];
vector<int> nodes;
int col[mxN];
unordered_map<int,unordered_map<int,int>> answers;

void dfs(int u){
	nodes.pb(col[u]);
	int st=nodes.size();
	for(auto it:adj[u]){
		dfs(it);
	}
	for(int i=st;i<nodes.size();++i){
		++answers[col[u]][nodes[i]];
	}
}

int main(){
	//io();

    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);


	int n,r,q,u,man,reg;cin>>n>>r>>q;
	cin>>col[1];
	for(int i=2;i<=n;++i){
		cin>>u>>col[i];
		adj[u].pb(i);
	}

	dfs(1);


	while(q--){
		cin>>man>>reg;
		cout<<answers[man][reg]<<endl;
	}

	return 0;
}

Compilation message (stderr)

regions.cpp:25:39: warning: bad option '-fwhole-program' to pragma 'optimize' [-Wpragmas]
   25 | #pragma GCC optimize("-fwhole-program")
      |                                       ^
regions.cpp:32:41: warning: bad option '-fstrict-overflow' to pragma 'optimize' [-Wpragmas]
   32 | #pragma GCC optimize("-fstrict-overflow")
      |                                         ^
regions.cpp:34:41: warning: bad option '-fcse-skip-blocks' to pragma 'optimize' [-Wpragmas]
   34 | #pragma GCC optimize("-fcse-skip-blocks")
      |                                         ^
regions.cpp:48:51: warning: bad option '-funsafe-loop-optimizations' to pragma 'optimize' [-Wpragmas]
   48 | #pragma GCC optimize("-funsafe-loop-optimizations")
      |                                                   ^
regions.cpp:59:9: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
   59 | void io(){
      |         ^
regions.cpp:59:9: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
regions.cpp:59:9: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
regions.cpp:59:9: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]
regions.cpp:72:15: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
   72 | void dfs(int u){
      |               ^
regions.cpp:72:15: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
regions.cpp:72:15: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
regions.cpp:72:15: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]
regions.cpp:83:10: warning: bad option '-fwhole-program' to attribute 'optimize' [-Wattributes]
   83 | int main(){
      |          ^
regions.cpp:83:10: warning: bad option '-fstrict-overflow' to attribute 'optimize' [-Wattributes]
regions.cpp:83:10: warning: bad option '-fcse-skip-blocks' to attribute 'optimize' [-Wattributes]
regions.cpp:83:10: warning: bad option '-funsafe-loop-optimizations' to attribute 'optimize' [-Wattributes]
regions.cpp: In function 'void io()':
regions.cpp:61:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |     freopen("input.in","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
regions.cpp:62:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |     freopen("output.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 14 / 15
• Subtask 2: 5 / 85