Submission #709529

#TimeUsernameProblemLanguageResultExecution timeMemory
709529TlenekWodoruCatfish Farm (IOI22_fish)C++17
100 / 100
228 ms55512 KiB
#include <bits/stdc++.h> #include "fish.h" using namespace std; struct RYBA { int y,c; long long wynik=0,wynik2=0; long long l=0,s=0,p=0; long long suma=0; RYBA(int yy=0, int cc=0) { y=yy; c=cc; wynik=0;wynik2=0; l=0;s=0,p=0; suma=0; } bool operator <(const RYBA &B)const { return y<B.y; } }; vector<RYBA>V[100009]; long long max_weights(int N, int M, vector<int>X, vector<int>Y, vector<int>W) { for(int i=0;i<M;i++) { V[X[i]+1].push_back(RYBA(Y[i]+1,W[i])); //cout<<"x="<<X[i]+1<<" y="<<Y[i]+1<<" w="<<W[i]<<endl; } for(int i=1;i<=N;i++) { V[i].push_back(RYBA(N+1,0)); V[i].push_back(RYBA(0,0)); sort(V[i].begin(),V[i].end()); } for(int i=1;i<=N;i++) { int Hl=0,Hp=0; long long l=0,p=0,s=0; for(int j=0;j<V[i].size();j++) { while(Hl<V[i-1].size()&&V[i-1][Hl].y<=V[i][j].y-1) { l+=V[i-1][Hl].c; Hl++; } while(Hp<V[i+1].size()&&V[i+1][Hp].y<=V[i][j].y-1) { p+=V[i+1][Hp].c; Hp++; } V[i][j].l=l; V[i][j].s=s; V[i][j].p=p; V[i][j].suma=l+p; //cout<<" x="<<i-1<<" y="<<V[i][j].y-1<<" c="<<V[i][j].c<<" l="<<l<<" s="<<s<<" p="<<p<<endl; s+=V[i][j].c; } } for(int i=0;i<V[1].size();i++) { V[1][i].wynik=V[1][i].suma; V[1][i].wynik2=V[1][i].suma; } long long WYNIK=0; for(int i=2;i<=N;i++) { int h; long long maxx; if(i>=2) { h=0;maxx=0; for(int j=0;j<V[i].size();j++) { while(h<V[i-2].size()&&V[i-2][h].y<=V[i][j].y) { maxx=max(maxx,V[i-2][h].wynik-V[i-2][h].p); h++; } V[i][j].wynik=max(V[i][j].wynik,maxx+V[i][j].suma); } h=V[i-2].size()-1;maxx=0; for(int j=V[i].size()-1;j>=0;j--) { while(h>=0&&V[i][j].y<=V[i-2][h].y) { maxx=max(maxx,V[i-2][h].wynik); h--; } V[i][j].wynik=max(V[i][j].wynik,maxx+V[i][j].p); V[i][j].wynik2=V[i][j].wynik; } } h=0;maxx=0; for(int j=0;j<V[i].size();j++) { while(h<V[i-1].size()&&V[i-1][h].y<=V[i][j].y) { maxx=max(maxx,V[i-1][h].wynik2-V[i-1][h].p-V[i-1][h].s); h++; } V[i][j].wynik=max(V[i][j].wynik,maxx+V[i][j].suma); V[i][j].wynik2=max(V[i][j].wynik2,maxx+V[i][j].suma); } h=V[i-1].size()-1;maxx=0; for(int j=V[i].size()-1;j>=0;j--) { while(h>=0&&V[i][j].y<=V[i-1][h].y) { maxx=max(maxx,V[i-1][h].wynik); h--; } V[i][j].wynik=max(V[i][j].wynik,maxx-V[i][j].s+V[i][j].p); WYNIK=max(WYNIK,V[i][j].wynik); } } return WYNIK; }

Compilation message (stderr)

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:41:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<RYBA>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         for(int j=0;j<V[i].size();j++)
      |                     ~^~~~~~~~~~~~
fish.cpp:43:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<RYBA>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |             while(Hl<V[i-1].size()&&V[i-1][Hl].y<=V[i][j].y-1)
      |                   ~~^~~~~~~~~~~~~~
fish.cpp:48:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<RYBA>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |             while(Hp<V[i+1].size()&&V[i+1][Hp].y<=V[i][j].y-1)
      |                   ~~^~~~~~~~~~~~~~
fish.cpp:61:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<RYBA>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |     for(int i=0;i<V[1].size();i++)
      |                 ~^~~~~~~~~~~~
fish.cpp:74:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<RYBA>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |             for(int j=0;j<V[i].size();j++)
      |                         ~^~~~~~~~~~~~
fish.cpp:76:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<RYBA>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |                 while(h<V[i-2].size()&&V[i-2][h].y<=V[i][j].y)
      |                       ~^~~~~~~~~~~~~~
fish.cpp:96:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<RYBA>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |         for(int j=0;j<V[i].size();j++)
      |                     ~^~~~~~~~~~~~
fish.cpp:98:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<RYBA>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   98 |             while(h<V[i-1].size()&&V[i-1][h].y<=V[i][j].y)
      |                   ~^~~~~~~~~~~~~~
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