Submission #625929

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
625929	2022-08-11 03:28:41	haojiandan	Catfish Farm (IOI22_fish)	C++17	100 / 100	323 ms	52964 KiB

fish

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#include "fish.h"
#include <bits/stdc++.h>
using namespace std;
#define MP make_pair
typedef long long ll;
const int maxn=(1e5)+10;
int n,m;
vector<pair<int,int> > vec[maxn];
vector<int> pos[maxn];
vector<ll> dp[maxn][2];
vector<ll> sum[maxn];
ll S(int i,int j) {
  j=lower_bound(vec[i].begin(),vec[i].end(),MP(j+1,0))-vec[i].begin()-1;
  if (j<0) return 0;
  return sum[i][j];
}
const ll INF=1e18;
void chkmax(ll &x,ll y) { if (x<y) x=y; }
ll max_weights(int _n,int _m,vector<int> X,vector<int> Y,vector<int> W) {
  n=_n,m=_m;
  for (int i=0;i<m;i++) Y[i]++,vec[X[i]].push_back(MP(Y[i],W[i]));
  for (int i=0;i<n;i++) {
    sort(vec[i].begin(),vec[i].end());
    ll pre=0; pos[i].push_back(0);
    for (int j=0;j<vec[i].size();j++) {
      pre+=vec[i][j].second;
      sum[i].push_back(pre);
      int p=vec[i][j].first;
      if (i>0) pos[i-1].push_back(p);
      pos[i].push_back(p-1);
 
 
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Compilation message (stderr)

fish.cpp: In function 'll max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:25:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |   for (int j=0;j<vec[i].size();j++) {
      |                ~^~~~~~~~~~~~~~
fish.cpp:42:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |   for (int j=0;j<pos[i-1].size();j++) {
      |                ~^~~~~~~~~~~~~~~~
fish.cpp:52:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |   for (int j=0;j<pos[i].size();j++) {
      |                ~^~~~~~~~~~~~~~

• Subtask 1: 3 / 3
• Subtask 2: 6 / 6
• Subtask 3: 9 / 9
• Subtask 4: 14 / 14
• Subtask 5: 21 / 21
• Subtask 6: 17 / 17
• Subtask 7: 14 / 14
• Subtask 8: 16 / 16