Mascot Song

input/code.cpp: In function 'int main()':
input/code.cpp:47:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<ve.size()-1;i++){
              ~^~~~~~~~~~~~

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

int n;
int m;
int k;
int y;
int z;
int x;
int c;
vector<int> ve;
vector<int> va;
int main(){
	cin >> n;
	for(int i=0;i<n;i++){
		cin >> x;
		ve.push_back(x);
	}
	cin >> m;
/*	for(int i=0;i<m;i++){
		cin >> k >> x;
		if(k==1){
			cin >> y;
			ve[x-1] = y;			
		}
		if(k==2){
			va = ve;
			for(int i=0;i<va.size();i++){
//				cout << (i+x)%va.size() << " ";
				va[(va.size()+(i-x))%va.size()] = ve[i];
			}
			cout << "\n";
			ve = va;
		}
		c = 1;
		for(int i=0;i<ve.size();i++){
//			cout << ve[i] << " ";
		}
		cout << "\n";
		for(int i=0;i<ve.size()-1;i++){
			if(ve[i] >= ve[i+1]){
				c++;
			}
		}
		cout << c << "\n";
	}*/
	for(int i=0;i<ve.size()-1;i++){
		if(ve[i] >= ve[i+1]){
			c++;
		}
	}
	c++;
	for(int i=0;i<m;i++){
		cin >> k >> x >> y;
		if(x!=1&&x!=n){
		//	cout << c << "\n";
			if(ve[x-1]>=ve[x]) c--;
			if(ve[x-1]<=ve[x-2]) c--;
			ve[x-1] = y;
//			for(auto u : ve)cout << u << " ";
//			cout << "\n";
			if(ve[x-1] >= ve[x]) c++;
			if(ve[x-1] <= ve[x-2]) c++;
		}
		else{
			if(x==1){
				if(ve[1] <= x) c--;
				ve[0] = x;
				if(ve[1] <= y) c++;
			}else{
				if(ve[n-2] >= x) c--;
				ve[n-1] = x;
				if(ve[n-2] >= y) c++;
			}
		}
		cout << c << "\n";
	}
}

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 1

Verdict: WRONG ANSWER

Test 3

Group: 1

Verdict: WRONG ANSWER

Test 4

Group: 2

Verdict: WRONG ANSWER

Test 5

Group: 2

Verdict: WRONG ANSWER

Test 6

Group: 2

Verdict: WRONG ANSWER

Test 7

Group: 3

Verdict: WRONG ANSWER

Test 8

Group: 3

Verdict: RUNTIME ERROR

Test 9

Group: 3

Verdict: RUNTIME ERROR

Test 10

Group: 3

Verdict: RUNTIME ERROR